Thank you, Drew. Good morning and welcome to Ciena's 2025 fiscal fourth quarter and year-end results conference call.

On the call today is Gary Smith, President and CEO, and Marc Graff, CFO. Scott McFeely, Executive Advisor, is also with us for Q&A.

In addition to this call and the press release, we have posted to the Investors section of our website an accompanying investor presentation that reflects this discussion, as well as certain highlighted items for the fiscal quarter and year-end. Our comments today speak to our recent performance, our view on current market dynamics and drivers of our business, as well as a discussion of our financial outlook.

Today's discussion includes certain adjusted or non-GAAP measures of Ciena's results of operations. A reconciliation of these non-GAAP measures to our GAAP results is included in today's press release.

Before turning the call over to Gary, I'll remind you that during this call, we'll be making certain forward-looking statements. Such statements, including our quarterly and annual guidance, commentary on market dynamics, and discussion of our opportunities and strategy, are based on current expectations, forecasts, and assumptions regarding the company and its markets, which include risks and uncertainties that could cause actual results to differ materially from the statements discussed today.

Assumptions relating to our outlook, whether mentioned on this call or included in the investor presentation that we posted earlier today, are an important part of such forward-looking statements, and we encourage you to consider them. Our forward-looking statements should also be viewed in the context of the risk factors detailed in our most recent 10-Q and in our upcoming 10-K filing.

Ciena assumes no obligation to update the information discussed in this conference call, whether as a result of new information, future events, or otherwise. As always, we'll allow for as much Q&A as possible today, but we ask that you limit yourselves to one question and one follow-up.

With that, I'll turn the call over to Gary.

Thanks, Gregg, and good morning, everyone. Today, we reported record fiscal fourth quarter and full-year revenue of $1.35 billion and $4.77 billion, respectively.

These records are a direct result of our sustained, purposeful investment and focus on leading high-speed connectivity technologies, together with disciplined execution and deep collaboration with our customers. Combined, these advantages have positioned and will continue to position Ciena to deliver value in the AI ecosystem, serving both cloud and service provider customers for many years to come.

Our progress in driving value from our operating model is also reflected in Q4 earnings per share of 91 cents, up 69% year over year, and full-year EPS of $2.64, up 45% from fiscal 2024. Lastly, we generated record orders for the year of $7.8 billion, which resulted in our entering this year again with record backlog.

These strong results really underscore our overall market leadership position, as well as the ramping, broad-based demand across our business. To this point, I'd like to provide some insights into what we believe to be robust and durable demand over the next several years.

Firstly, we continue to see accelerating demand from our cloud customer providers, and that includes the large hyperscalers and the emerging neoscale segment that we talked with you about last quarter. In fact, cloud providers today are as focused on scaling their network as they are on their access to power.

Orders from cloud providers are very strong and ramping across our portfolio, and they constitute a substantial portion of our growing backlog. It's important to note that this accelerating demand is being driven by several dynamics, and as counterintuitive as it may seem, the cloud providers have largely actually underinvested in their networks to date, particularly relative to other areas of AI infrastructure.

The major hyperscalers, who are seeing rapid traffic growth, not only have the capital to invest, but also have real, sustainable business models that are currently constrained by the need to dramatically scale their global networks. These cloud providers cannot and do not intend to strand their significant investments in AI-related data center infrastructure.

I would stress that that traffic needs to leave the data center to be monetized and operationalized. We are their strategic technology partner for those network requirements.

Secondly, demand from our service provider customers continues to grow steadily as they too reinvest in their transport infrastructure after years of digesting accumulated inventory, and also having focused on other areas of their networks, most notably and specifically 5G. In addition, service providers' businesses are also being fueled by AI through the enterprise cloud demand, and specifically cloud providers' need for managed optical fiber networks, or MOFN.

As a proof point here, we have recently won and are working to deploy a large MOFN project in India with two service providers for a major hyperscaler. Additionally in the quarter, we have secured multiple major MOFN wins in other regions, including several in new and emerging geographies for our business.

As a result of these dynamics, service provider orders were up nearly 70% for the year, and in fact, our top three service providers' revenue from '24 to '25 grew 16%. Due to the increasing momentum across both cloud and service providers, Ciena's optical market share has continued to grow and extend our overall leadership, adding two points year to date, and we expect further gains clearly in 2026.

In order to address this accelerating demand, we are committed to increasing investments and working with our supply chain partners to scale the business. With product delivery lead times extending in the face of this unprecedented demand, we are proactively expanding our capacity to ensure our ability to timely meet our customers' demands.

Indeed, this has already yielded results for fiscal '25, as we delivered double our initial revenue growth expectations for the year. Marc will discuss how we are stepping up investments to support demand and the expanding opportunities we expect over the coming years.

The simple truth is that AI continues to drive network expansion across all our customer segments, and the scale of investment currently underway is massive and accelerating faster than anything we or indeed the industry have seen to date. I would also mention that unlike the COVID-inspired supply-demand imbalance, we are seeing this demand being installed and leveraged for real, near-term revenue opportunities at our customers, as evidenced by accelerated implementation services that increased in revenue by 34% in fiscal '25.

With that, I'd like to take a moment to share our sort of broader perspectives on the AI opportunity as it relates to high-speed connectivity. As bandwidth continues to grow inside the data center, and as this traffic flows out of the data center, AI inference models are moving closer to the network edge.

For the reasons that I mentioned earlier, we will continue to expand our existing leadership and addressable market in high-speed connectivity in the WAN. In addition to the wide area network, we're also seeing a significant addressable market opportunity in and around the data center.

It is, I think, well understood that cloud providers are investing heavily in data centers to deliver on the current and future promises of AI. Many third parties are estimating capital spending of more than $7 trillion through the end of the decade in all AI-related infrastructure.

This is obviously necessitating the need for both training and inference workloads at massive scale. As a result of the massive growth in AI workloads and to address growing power and space constraints, cloud providers are planning and building distributed AI data center training clusters, or AI factories, which require multiple clusters to act as one.

In fact, along with those power and space constraints, the ability of the cloud providers, and specifically the major hyperscalers, to scale their global networks is becoming the critical long pole in the tent for them to operationalize AI for both training and inference purposes. Within these data center environments, there are three key connectivity requirements: to scale up within a data center rack, to scale out between racks in a data center, and finally to scale across between geographically distributed data centers, which must operate at the highest levels of performance with super high capacity and the lowest latency possible.

With our innovation and time-to-market leadership in high-speed connectivity solutions, our position could not be better to fulfill this critical demand. This growing AI-driven opportunity for Ciena is what we refer to as in and around the data center.

In fact, our in and around the data center opportunities grew threefold from '24 to '25, and are a major contributor to our '26 expected growth rate. We have proactively invested in our portfolio to intersect this growing market segment, and with a few notable examples.

First is our interconnects portfolio, comprising both our power- and space-saving ZR and ZR+ pluggables and our optical components. We expect interconnects to play a meaningful role in scale-up, scale-out, and in fact scale-across workloads.

In fiscal year '25, we surpassed our target of more than doubling FY '24 pluggable revenue, reaching revenue of more than $168 million. In the quarter, our WaveLogic 6 Nano 800-gig pluggables have shipped for initial revenue.

Since the end of the quarter, we have shipped 800ZR plugs to three additional cloud providers for testing and certification. With regard to components, we address the cloud providers' preferred disaggregated consumption model with our high-speed coherent and other industry-leading WaveLogic technologies, including our DSP, SerDes, and other high-speed analog and electro-optical components.

In addition, our components business now includes the electrical and optical interconnect solutions from our acquisition of Nubis Communications. The Nubis technologies and expertise will help us address the scale-up and scale-out opportunities inside the data center.

We're excited to have the Nubis team as part of Ciena, and are on track to GA the first products in fiscal '26. As we've previously noted, as technology advances and data rates increase, the components portion of our interconnects portfolio primarily represents revenue opportunities beyond fiscal '26.

In addition to our interconnects portfolio, as market needs continue to evolve driven by AI, we're seeing new architectural applications arise in and around the data center, with two recent cloud provider use cases, I think, of particular note. First use case is the scale-across architecture linking geographically dispersed AI training clusters using our market-leading RLS photonic line system, Waveserver, and interconnects portfolio.

This is an opportunity we discussed over the past couple of quarters where a large hyperscaler is linking to two regional data centers to build an AI backbone. I'm pleased to report that this hyperscaler is now extending this architecture to more locations.

Additionally, I am pleased to announce that two more major hyperscalers have chosen our optical solutions for their scale-across training applications as well. The second use case is out-of-band network management.

Ciena's unique DCom solution leverages our XGS-PON and other routing and switching products, and was initially designed with Meta to meet hyperscale requirements. Today, I'm pleased to announce that our DCom business with Meta has expanded as they plan to deploy in multiple new data centers.

Also, we're engaged in advanced technical discussions with additional hyperscalers to deploy this DCom solution in their data centers. I'd like to briefly acknowledge here that the scale-across and DCom wins are just the most recent AI-related use cases to materialize for us in recent months.

They are great examples of how we co-create and productize with market-leading solutions to address critical customer scaling requirements. We fully anticipate continuing to develop additional innovative solutions with our customers as they monetize AI across the various architectures.

Before I turn it over to Marc, I really want to reiterate that as we leave Q4 and indeed the entirety of 2025, we have absolute conviction that the positive market dynamics and our technology leadership provides us with increasing confidence that the durability of demand and our business and financial trajectory are very strong. I'll now hand it over to Marc for a closer look at our Q4 and fiscal '25 performance and outlook.

Marc.

Thank you, Gary, and thank you to everyone for joining the call this morning. Before I review the specific results for Q4 and the full year, I'd like to provide an update on the priorities I outlined in the last earnings call, specifically gross margin performance, working capital management, and capital allocation.

First, gross margin performance. You've seen that our Q4 gross margin sequentially improved and exceeded the midpoint of our guide by 90 basis points.

This was largely due to higher revenue and software mix. We've had constructive discussions with our customers to improve fair value exchange, with those improvements appearing in late '26 given the large backlog entering the year.

Additionally, we are navigating through particular headwinds from ramping NPI products and rising input costs as supply becomes further constrained due to fast-growing demand. All told, I expect year-over-year gross margin improvements, with second-half margins being higher than first-half margins.

Second, working capital management. We have improved our cash conversion cycle by 34 days sequentially, largely on faster collections and improved inventory days.

In fact, our inventory turns have improved by 4/10 of a turn. We left the year with $1.4 billion in cash after generating $371 million in cash from operations in Q4 and free cash flow of $326 million.

With respect to capital allocation, we completed the first year of our most recent $1 billion stock repurchase authorization, repurchasing approximately $330 million for the year at an average price of $83.34. We invested $140 million in capital expenditures in the business, focused on developing the next generation of leading products and enabling capacity to nearly double our 2025 growth rate.

We also completed the cash purchase of Nubis, supplementing our interconnects portfolio to service the in portion of in and around the data center opportunity. We have also reallocated resources that will allow the company to meet the growth challenges ahead with new business processes and technology rationalization.

Finally, let me turn to operating leverage. We will hold to our commitment of flat OpEx in 2026 while investing in new opportunities for our interconnect portfolio.

Now let me turn to the specifics of our Q4 and full-year performance. As Gary noted, Q4 revenue reached $1.35 billion, up 20% year over year and $70 million above the midpoint of our guide.

For the year, annual revenue was up 19% to $4.77 billion, a new record. Q4 was strong across all lines of business.

Specifically, our optical business was up 19% year over year, driven by strength in RLS, which was up 72% year over year. Our routing and switching business grew 49% year over year, with the 3000 and 5000 Series product revenue doubling on a combined basis, with the DCom opportunity driving much of this growth.

Global Services had a strong quarter, growing 25% year over year, driven largely by advisory and enablement and installation and implementation services, which grew 53% and 45% year over year, respectively. I'd also like to note that Blue Planet had a very successful year, achieving $34 million of revenue in the quarter, a record $115 million in fiscal '25, and achieving full-year profitability.

We had three 10% revenue customers in Q4, including two global cloud providers and one Tier 1 North American service provider. We are exiting the year with about $5 billion of backlog, of which approximately $3.8 billion is hardware and software, with the remaining being services.

This backlog supports a large share of our fiscal '26 revenue expectations, and we see indications of strong demand continuing into '27 and beyond, giving us exceptional visibility and confidence in our outlook and medium-term expectations. Adjusted gross margin in Q4 was 43.4%, 90 basis points above the midpoint of our guide, driven by higher revenue and software mix.

For the year, adjusted gross margin was 42.7%. We continue to mitigate most of the impacts of tariffs as currently constructed, and the net impact of tariffs are immaterial to our bottom line.

We continue to monitor the situation and work closely with both our supply chain and customers as necessary. Q4 adjusted operating expense was approximately $409 million, and $1.51 billion for the year.

Excluding the higher incentive compensation, we achieved in-line OpEx for the quarter and underspent slightly for the year, reflecting our ongoing disciplined approach and operational efficiency. This led to Q4 adjusted operating margin of 13.2%, up 250 basis points sequentially and 320 basis points year over year.

Operating margin for the year reached 11.2%, 150 basis points from fiscal '24. We achieved EPS of 91 cents, up 69% year over year, with annual adjusted EPS of $2.64, up a healthy 45%.

Finally, cash from operations was $371 million in the quarter. For the year, free cash flow reached $665 million after $140 million in capital expenditures.

Now turning to guidance. Last quarter, our confidence and visibility due to AI-driven dynamics enabled us to atypically provide an early outlook for 2026.

As we move into the new fiscal year, for all the reasons Gary and I have discussed, those dynamics and the customer demand environment not only remain robust, they have accelerated. As a result, today I'd like to update that guidance from September as our outlook has improved even from just a few months ago.

We now expect revenue in fiscal '26 to be approximately $5.7 to $6.1 billion, or nearly 24% annual growth at the midpoint, versus the 17% growth rate discussed in September. We continue to expect gross margins for fiscal '26 to be in the range of 43%, plus or minus a point.

As I mentioned earlier, we continue to work to mitigate input cost pressures through supply rebalancing, designing costs out, and additional pricing actions over time. We expect the impact of these mitigation efforts will be realized in late fiscal '26.

With these dynamics, we expect the margins to improve first half to second half as cost reductions and pricing actions take hold. We expect adjusted operating expense in fiscal '26 to be flat at approximately $1.52 billion after accounting for the Nubis operating expenses post-acquisition.

With respect to operating margin, we previously advised an acceleration of our longer-term goal of 15% to 16% operating margin from '27 into 2026. We now expect fiscal '26 operating margins to improve further to 17%, plus or minus a point.

Our capital expenditures for fiscal '26 are expected to be between $250 and $275 million. This is higher than our typical capital intensity in order to invest in supporting expected robust demand in late 2026 and into 2027, as well as incremental costs for 3-nanometer mask sets.

In fiscal '26, we expect to repurchase approximately $330 million in shares under our 2024 stock repurchase authorization plan. Finally, with respect to Q1 guidance, we expect to deliver revenue in the range of $1.35 to $1.43 billion, adjusted gross margin between 43% and 44%, and adjusted operating expenses of approximately $380 million, yielding an operating margin of 15.5% to 16.5%.

To conclude, Ciena had a strong 2025, and we are looking to an even stronger 2026. We are thoughtfully allocating our owners' capital to deliver value both to our customers and for our owners.

We are singularly focused on executing our strategy and winning in the market. With that, let me turn it back to Gary.

Thank you, Marc, and let me reiterate those comments. We had an incredibly strong quarter in fiscal 2025, which we believe is a seminal one for Ciena, one that provides a remarkable springboard for continued growth.

Our momentum continues to build, our balance sheet has never been stronger, and industry dynamics have never been more positive for Ciena. We are executing well and have high confidence we will continue to do so.

We remain very focused on our strategy and continue to deliver the world's best high-speed connectivity that really underpins today's AI-driven environments. With that, we'll now take questions from the sell-side analysts.

Thank you.

Thank you, and congratulations, Gary and Marc. Just great to see the progress here.

The first question, Marc, when we think about the guidance and the raise, Gary talked about some of the new use cases and more hyperscalers looking at either scale-across or also discussions around DCom with other hyperscalers. How much of that is in the new guidance versus just continued, sort of growth across the existing relationships that you have?

Then the second question for Gary is just thinking about the new scale-across opportunities, Gary, you gave us some metrics around the first wins in terms of either revenue or bandwidth, and bandwidth measured in petabits. Are the discussions that you're having in the wins with the new hyperscalers similar, or if you could maybe give us a little more detail on those, that would be great.

Thank you.

Hi, Ruben. This is Marc.

Thanks for joining. In terms of how much of the new opportunities that Gary talked about are in the guide, they are all in the guide.

If you think about the in and around data center, which many of the wins that Gary talked about include, we're seeing nearly a tripling of the percent of revenue from what we saw in 2025 of low single digits to the percent of revenue that we have in 2026's guide of low double digits. I think we've captured a lot of that.

Obviously, we continue to work to satisfy all that demand. You've seen it's all included in there.

Short answer.

Ruben, to the second question around the sort of models around the across piece, first of all, I'd say, obviously all of these hyperscalers are not sort of homogeneous around their business models, and therefore their network requirements reflect that. They are different, notwithstanding they all need to train.

What we're seeing with the initial hyperscaler is obviously just expanding the amount of sites, and that will happen over multiple years. We've had two other hyperscalers now adopt our architecture, we've got three out of the four hyperscalers have selected us for their scale-across training models.

In terms of quantifying how much they are, they're clearly hundreds of millions each, but they are different in terms of their scale at this stage. Really we're just beginning to see the traffic come out of the data center for training around these regional backbones or clusters.

We're just beginning to see that, and I don't think there's going to be a cookie-style sort of quantification of the traffic at this point.

Yep, makes sense. Thanks, Gary.

Yep.

Great. Thanks for taking the question.

I wanted to maybe expand a bit on the scale-across outlook. In particular, you've gotten these two additionals that's certainly earlier than we were expecting.

I want to see if you can give us maybe a timeline of when you would expect those two other hyperscalers to really kick into the numbers, how imminent that is. Then maybe you could talk about sort of a longer-term cadence of scale-across activity, because I think when you first disclosed it, you talked about the initial customer perhaps having opportunities of eight or nine kind of projects.

Now that we see additional hyperscalers entering the fray, how would you look at it more broadly over the multi-year number of projects? That's question number one.

Question number two is hopefully the easiest one you'll get today, but if you could just break up the 10% disclosures, you said two two cloud and an operator, if you can give us the detail that'll ultimately be in your SEC filings, but if we could break that down, I'd appreciate it. Thank you.

Simon, let me take the first part of that. In summary, I would expect us to take revenue for all three of these hyperscalers in '26, or begin to take revenue in '26.

I think the large part of this is going to be scaling up in '27 and through '28. These are enormous amounts of scale and commitments around massive amounts of fiber between these data centers, which takes time from an infrastructure point of view.

I believe we'll take revenue on all three during the course of this year, but Simon, I really see the ramp on this as we get to '27 and through '28. This is going to be the backbone for these training models.

I would also say at this stage, it is all US-centric around the training models as well.

Simon, let me hit your second question. The three plus 10% customers that we had in Q4, one was AT&T.

You'll see that in the K. The other two were not being specific on who they were, but collectively for Q4, those three covered just under 44% of Q4's revenue.

Then for the full year, it was one cloud provider and one service provider that collectively, and it was AT&T as the service provider, collectively for the year they covered about 28% of our revenue.

Can you give us that split? What each one was within that 44% in the quarter?

I'll have to get back to you, Simon. I don't have that specific in front of me.

Thank you.

Hi, thank you for taking my questions, and great job by the team. First one for Gary, Gary, on Nubis, in September, you talked about in the second half of '26 and early '27 adoption for CPO, NPO type products.

Are you seeing an acceleration over there?

I would say that, yeah, we're engaged with multiple opportunities with them. Obviously, we're waiting for first GA product, but we have a lot of market engagement even prior to our acquisition with them.

I would say, Atif, that what we've seen since, and this is early days, we only did the acquisition last quarter, but I think we've seen sort of accelerated interest now that they're part of a broader company. Scott, do you want to...

Just, Atif, just to remind you, there's sort of, at a high level, two product families within the Nubis portfolio. One is a linear retimer that is very effective in terms of extending the life of active copper cable, and we see that as an opportunity that will start in '26.

The optical part of the portfolio, the second part of the portfolio, we see more as a '27 and beyond opportunity. As Gary said, we're getting great feedback from customers on a bunch of different dimensions.

The sort of open ecosystem approach to CPO, secondly, just the caliber of the team, and then I'd say more internal reaction, and one of the big filters as we looked at this company was, did we think they're a good cultural fit? I'd say 90 days in, we're absolutely thrilled with that.

Great. As my follow-up, Marc, nice to hear your view on gross margins and keeping OpEx disciplined.

You have talked about advantages from bringing lasers in-house, wondering what else is driving the sustainable outlook for operating margins of 17%?

There's a couple of things that I would say. The first is one of the big things that we're working on in the first half of the year is ramping our 800-gig pluggables.

As we ramp that, you basically get yield economics, which will lower the unit costs over time, and we expect that, as we go through Q2, Q3, Q4, we'll see significantly lower costs than we're seeing at the beginning of the year. That would be the first aspect that I would say.

The second aspect is, the conversations that we've had with a lot of our customers have yielded good results. Once we get through the backlog that we're entering the year with, a lot of those new orders will start to see the benefits of those pricing discussions, and so we would exit the year at a higher exit rate than we feel that we'll see in first half of the year.

Thank you.

Hey, guys, thanks very much. It seems like there's just obviously tons and tons of demand here.

Could you give us more on what you're doing on the supply side of things? Just curious what do you see as the supply constraints in the business?

Is it fab in chips? Is it contract manufacturing?

Anything you can tell us on what those bottlenecks are and what you're doing to open those up would be great. Thanks a lot.

Hey, George, it's Marc. I'll start, and then hand it over to Gary and Scott for more color.

A couple of things. You heard me talk about a pretty nice increase in our CapEx year on year, and within that, there's about a 50% increase in what we're doing to ensure that we could have more capacity to support what will really be end-of-year and into 2027 demand.

What we're seeing is really a constraint on the photonics parts, right? I would say optical parts in general.

We've worked really closely with our key suppliers, and I know you know who those are, to make sure that we can secure supply. The investments that we've made in 2025 actually yielded a doubling of the growth rate from what we expected a year ago, right?

Between that, the level of vertical integration that we've got in just what we control, as well as the investments that we're making in 2027, we're trying to support as much of that revenue as we possibly can through '26 and into '27.

Marc, I'd I'd add to that in terms of the constraints you talked about in terms of the industry optical component subsegment, if you like. An advantage that we have is a couple of advantages that we have, I think, relative to other peers.

Number one is we have a very tight relationship with the cloud providers, you know. We have, the market share leadership there and, a great set of relationships.

Even though the demand out outstripped what everybody expected, I think we had the earliest view of that in the industry, and therefore, our our conversations with those industry component suppliers started earlier than everybody else. That gave us that gave us a benefit.

The other thing is, as we talked about in the past, and we're more vertically integrated than anybody else, to some degree, we we do have a little bit more control over our own destiny. Part of the reason why in the last 90 days we've been able to take 2026 out is the is the activity that we did in '25 that allowed us to double our growth perspective in '25 is carrying over into '26, we're getting more confident in our ability to deliver to that demand as well.

Got it. Then one last one.

What are lead times right now? Any sense for kind of what blended or average lead times would look like for you guys?

Thanks.

This is Gary. It really varies by specific product areas.

They're all generally in the optical infrastructure space, think scale-across, RLS, they have extended out, but it depends on the product grouping. As Marc and Scott said, we're confident look at the midpoint of our guide, which is what, 24% growth for this year.

That's the work, as Scott said, we did kind of last year to increase capacity and component supply. We're now working on towards the end of '26 and '27 and making sure that we're in a good position from that point of view.

Hopefully by the time we get to the end of the year and we get to '27, lead times can come down a little. We're seeing increased in demand, including order flows in Q1 being strong as well.

Thank you.

Thanks, George.

Hi. I have three questions.

The first one is historical perspective. You guided before to 8% growth, and you increased it multiple times, and now you are guiding for 30% growth for next quarter.

That's a massive change. You didn't have good visibility before for the growth, and the question I'm asking myself is, do you have now good visibility going forward?

Can you take us through the historical perspective, meaning what happened over the last four, five quarters that drove up the growth so much better than expectations? You spoke a little bit about customer concentration, but what happened that enabled this kind of growth?

Maybe I'll stop here, and then I'll ask my other questions after because they are more on the margin side.

Hey, Tal, it's Marc. I'll start, and Gary can add in here.

I think there's really a couple of dynamics that's going on. One one is the close proximity that we have with our hyperscaler customers has really allowed us to get insight into what their demands are and how we plan for those demands.

They followed that demand up with pretty significant orders, right? You heard Gary talk about we achieved $7.8 billion of orders over 2025.

As we look at what we're seeing in Q1, we're essentially sold out, right? If we had more supply, we'd be able to sell more.

We've got really good visibility of what the next several quarters look like just because we've got those orders in place. Then the last thing I'll say before Gary can chime in is through 2025, I think our supply chain team has done a quite a good job of squeezing every drop of blood from the stone that they can to drive that revenue.

We invested in 2025. We're increasing that investment by about 50% through 2026, and we're seeing those annualization layers kind of help us drive higher revenue that for the year, we expect a midpoint growth of 24%.

I don't know, Gary.

Tal, I would say sort of zooming out from this, a sort of big picture, I think everything Marc said there, I think we've done a good job operationally of scaling it up quickly. I would say that what's behind that really with the cloud guys just in general is I think early in the year, at the beginning of '25 as we began to get through it, was a realization that their networks needed to be scaled massively.

If you think about the sort of hierarchy of flow around long poles in the tent and focus areas, obviously there's been tremendous focus in the context of AI infrastructure around GPUs, TPUs, and getting access and scaling those up, power within the data centers, etc. I think you began to then see, oh, the network.

That coincided with the need for backbone networks to train across multiple data centers and the increase they were seeing in inference traffic. Obviously, this is uncharted territory from a forecasting of a network perspective, but I think they're now coming up to speed very quickly that it's now about the network as the gating item.

I think there was a real realization of that in the first part of '25, and you're seeing that play through now. That's the sort of context that I would offer on that.

Tal, within that, if you go back a year or 18 months, we talked quite a bit about our belief system of optics and particularly coherent optics having a bigger and bigger role to play in the network inside and around the data center. What we weren't sure of though, and we were open about this, what we weren't sure of was what is the timing of when you see that inflection point?

What's happened in that period is with the scale-across network is you're seeing that inflection point. New use cases for coherent optical high-speed connectivity.

Got it. My second question is on margins.

In previous cycles, your margins shot up all the way to even 49%, even over 50% if we go back a few years, and cycles always had a direct impact on gross margin. You always had a cycle in margin as well.

This time, because it's coming in pluggables, because it's coming in cloud, your margins are 40 You are guiding to 43%, 43.5%, and the question is, is there a chance that gross margin will also have a cycle with revenues, or what needs to happen for the gross margin to have a similar cycle to revenues?

I think how I would respond, Tal, is there's a couple of headwinds that we're seeing at least in the near term, and I've talked about the 800-gig. We're in an NPI phase of that product, so that's creating some headwinds that we expect to kind of normalize out through the end of the year.

The other piece is, I think the customers are starting to see the value in what we're providing, both in space savings and power savings, and we're getting some benefit from that relative to the value that we're delivering. I think between those two things, we're seeing that, and my sense is that that's going to be more sustainable than the cyclicality that we've seen in the past, because we're really starting to talk about a foundation level of benefit that our customers are seeing.

As Gary said, they're realizing that they've underinvested in the network, both on the cloud provider side and the service providers are catching up as well. I think we're going to see steady improvement to what we've described previously as our aspiration to get back to the mid-40s, which at this point we kind of view as a way point, not the endgame.

I think we're on a steady track. You'll see sequential improvement.

We'll exit the year better than we will perform in the first half of the year, but I'm pretty confident that we're going to see ongoing, multi-year gross margin expansion.

Thanks, Marc.

Thank you.

Hi. Thanks for taking my questions.

Maybe for the first one, I had a question on scale-across. Gary, you mentioned the additional engagements with hyperscalers.

Are you seeing any engagement yet from the neoclouds on that front, or would you expect most of that neocloud demand for scale-across to come through the hyperscalers itself? Can you help us think about margin implications for scale-across relative to there's a heavy mix of line systems as well as capacity, how should we think about margin implications of scale-across ramping here relative to your corporate average?

I have a quick follow-up. Thank you.

I think largely at this stage, the training at scale across AI backbones is largely purview of the large hyperscalers, and I think the neoscalers, there's a couple of them that are on the back of that for want of a better description. I think this is largely right now given the frankly the scale of it with the hyperscalers.

I think it's going to take a while for that to bleed through into the neoscalers. In terms of the deployment there, as Marc said, it's going to be this combination of next-generation line systems, RLS, which is also fairly recent into market, and also with the 800-gig plugs as well.

Yes, in the early stages, that's a sort of headwind from a margin point of view, which is why we're kind of guiding as we are. As those platforms get more into volume, the yields improve, and we get through that NPI phase on both of those, then we'd have better margins as we exit the year.

Of course, you've also got the benefits of just scale and volume as well.

Got it. Just for my follow-up, clearly FY '26 is your guide is largely covered by the backlog.

When you look at now sort of the long-term guide that you provided of 8% to 11% growth, what's level of visibility are you getting from your customers about fiscal '27? Are they sort of giving you more detailed plans for the out years just so that you can plan out capacity, and does that sort of imply that your growth rate sort of stays above this 8% to 11% level in sort of the out year as well?

Hey, Samik, it's Marc. A couple of things.

One is, when we talked about the longer-term guides last quarter, we kind of took those off the table, just because in the medium term, we're not very good at calling the growth rates on the upside, right? That 11 to 8% to 11%, I think is off the table.

We're not really talking to 2027 at this point, but I would say overall, maybe qualitatively, we feel very strong going into '26. We think a lot of that momentum continues into 2027, and the proof point there is really the increase that we've seen in our CapEx for capacity, which is up 50% year on year.

I think the other thing you could obviously extrapolate out, we're not sort of guiding into '27 right now. We're just starting '26, but clearly the dynamics have changed here.

That's why I said '25 was a seminal year for us in this regard. I think you're seeing multiple scale-across wins that by their very nature they're going to be multi-year, so that gives us confidence in '27 and '28.

The other thing I would say is that's really all the context of our optical WAN-type business in and around the data center to it. All we're making tremendous amounts of investments and progress on the other dimensions there, sort of inside and around the data center, which are completely new markets for Ciena.

The revenues to those are largely, we're taking some now and making good progress, largely '27 and '28 plays, and specifically coherent inside the data center. That's all additional revenue to us in addition to all the things we've talked about right now.

That gives us confidence in the multi-year dimension to this.

Got it. Great.

Thank you. Thanks for taking my questions.

Thanks, Samik.

Thank you. Two questions for me as well.

First, Gary, following on what you were just talking about, could you maybe talk a little bit about DCom and see if you can somewhat scale that for us, and, good news that it's expanding with Meta and being tested at others? Could this be a type of technology that would really accelerate that move inside the data center as it gives you kind of a beachfront?

Then second, on the telco side, I get the MOFN part and 5G currently, but tends to be a little bit more cyclical than probably what you're going to see from hyperscalers. How do you look about sustainability of that business over the next few years on the telco specifically side?

Thank you.

On the DCom part of that, obviously that was co-created specifically with Meta over a period of time, and I think what we're seeing with that is the expansion of the opportunity within their data center piece to that. It saves power and space for them, which is absolutely critical, and we've seen an expansion even in '26, and you're talking hundreds of millions of dollars of this.

As they refresh and build out new data centers, that's become part of their adopted architecture. I think this again is going to be a multi-year opportunity within Meta.

I also think about these large hyperscalers really when you think now about the diversity of portfolio that we're dealing with them, they're really markets in their own right given their size and scale. We're also, as you said, engaged deeply with two to three other hyperscalers around this kind of architecture, and I would expect to see wins during the course of the year and adoptions for additional cloud players for DCom.

It gives us a entree point into the data center together with Nubis, together with the scale-across, because even scale-across is actually installed inside the data center. You put all those things together, and we're definitely under the tent here.

That's before the Nubis, which will start to deliver product in '26, and before the opportunity with coherent inside the data center. To your point on the telco piece, I think they've kind of been underinvested in transport frankly for the last five years ever since COVID began.

They didn't want to mess with their networks during COVID. Then you had the supply chain whiplash, and then you had this massive investment they all had to make in 5G, which largely has not yielded the financial returns that they'd anticipated.

Now you're seeing, I think, a multi-year investment back into transport. They are largely underinvested in their networks, and I think whilst that's not at the rapid scale and growth rate of the clouds, I think it's nice, steady, single-digit growth within the telco space, and I think that's quite sustainable.

What is amplifying that though is the AI traffic for things like MOFN. You saw last year hundreds of millions of dollars of our telco business was in fact MOFN, specifically for hyperscalers.

Typically, we'd seen it internationally. We're also seeing it now in North America ramp up as well.

You put those two things together, and I think that gives us confidence around that telco, which is half of our business currently, having nice sustained growth rates, albeit lower than the cloud players.

Thank you very much.

Thank you. We'll take one more question, please.

Super. Thanks for the question.

Gary, maybe you can take a step back, and regarding your great growth you're seeing here in the cloud segment, how has your product mix changed over say the last 12 months? Obviously, a lot around scale-across and RLS and DCI, where you're historically more of a long-haul and subsea player.

Can you give us any kind of a perspective there on the product mix?

I would say sort of we're laying more tracks at massive scale than we would normally see. You specifically seen that with scale-across, because they're laying the tracks down first.

Much higher proportion of line systems would be the initial take on that. Now that will then move to plugs.

We're seeing, obviously, a very large ramp-up in our 800-gig plugs, which we think will be largely adopted amongst most of the hyperscalers. That is a different mix than we've seen traditionally.

More intelligence on the line systems than also you've seen traditionally, because given the massive scale that they're going to need to put in with multiple fibers across it, then you're going to need to increase the intelligence and the scalability of the line systems. Couple that with DCom, which, frankly, very quickly emerged as a portfolio offering, that was not projected into the '26 plan, when we did that in our three-year planning piece.

The mix has changed quite a lot around that architecture.

Really helpful. Just a quick follow-up, if I could.

Just around growth limiters outside of your control as it relates to fiber supply, permitting, labor, and really putting these lanes in the ground, what kind of supply constraints are you seeing for the industry for your cloud customers?

I think the relationship with the fiber providers, people like Corning, etc., is very tight amongst the cloud players and particularly the wholesalers, people like Lumen, who's publicly talked about that. I think there's a lot of commitment to scale capacity, we are seeing that happen.

The other thing I would say is it's a real opportunity for us, because we have the largest optical support and services organization in the world, and we are increasingly engaged with the deployment of these. In fact, our largest service customer last year was a cloud provider for the first time, and we're now providing multiple services across the hyperscalers, and we see that as an area of tremendous growth to help, to your point, facilitate the delivery of this infrastructure.

Super helpful. Thanks, Gary.

Thank you.

Thanks, Ryan. Thanks, everyone, for joining us today.

We look forward to catching up with folks today and over the next week or so. Happy holidays, and happy New Year to all.