Good afternoon. Welcome to today's conference call, and thank you for standing by. My name is Brent, and I'll be your conference operator today. At this time, I would like to welcome everyone to the Infinera Corporation Q4 2021 earnings conference call. All lines have been placed on mute to prevent any background noise. After the speaker's remarks, there will be a question and answer session. If you'd like to ask a question at that time, simply press star and the number one on your telephone keypad. If you'd like to withdraw your question, again, press star one. Thank you. I would like to now turn the call over to Amitabh Passi, Vice President of Investor Relations. Sir, please go ahead. Thank you, operator, and good afternoon. Welcome to Infinera's Q4 of fiscal 2021 conference call. A copy of today's earnings and investor slides are available on the investor relations section of the website. Additionally, this call is being recorded and will be available for replay from our website. Today's call will include projections and estimates that constitute forward-looking statements, including, but not limited to, statements about our business plans, including our product roadmap, sales, growth, market opportunities, manufacturing operations, products, technology and strategy, statements regarding the impact of industry-wide supply chain challenges and COVID-19 on our business plans and results of operation, as well as statements regarding future financial performance, including our financial outlook for the Q1 of our fiscal year 2022. These statements are subject to risks and uncertainties that could cause Infinera's results to differ materially from management's current expectations. Actual results may differ materially as a result of various risk factors, including those set forth in our annual report on Form 10-K for the year ended on December 26, 2020, as filed with the SEC on March 3, 2021, and our quarterly report on Form 10-Q for the quarter ended on September 25, 2021, as filed with the SEC on November 3, 2021, as well as subsequent reports filed with or furnished to the SEC from time to time. Please be reminded that all statements are made as of today, and Infinera undertakes no obligation to update or revise any forward-looking statements to reflect events or circumstances that may arise after the date of this call. Today's conference call includes certain non-GAAP financial measures. Pursuant to Regulation G, we've provided reconciliation of these non-GAAP financial measures to the most directly comparable GAAP financial measures in our earnings release and investor slides for this quarter, each of which is available on the investor relations section of our website. Finally, as a reminder, we'll allow for plenty of time for Q&A today, though we ask that you limit yourselves to one question and one follow-up, please. With that, I'll turn the call over to our Chief Executive Officer, David Heard. Take it away. Thanks, Amitabh. Good afternoon, and thanks for joining us today. I will begin with a review of the results for the quarter and the full year, and then turn the call over to Nancy to cover the details of our financial performance. Q4 was another strong quarter for us. Non-GAAP revenue of $401 million exceeded the high end of our outlook range, while both non-GAAP gross margins and operating margins were above the midpoint of our outlook. On a year-over-year basis, revenue grew 13%, and the second half grew 9%, driven primarily by the adoption of ICE6 and strong demand for our products from customers in the Americas and EMEIA regions. Gross margins in the quarter benefited from a higher mix of ICE6, partially offset by elevated supply chain costs, higher line system sales, and slightly lower services margin due to a high mix of professional services to install new networks. Nancy will provide additional details of these dynamics in our commentary. Bookings momentum continued in the quarter. On a year-over-year basis, bookings were up profoundly and set a company record and were nicely balanced across customer verticals and major geographies. Our product backlog was up 100% year-over-year. Our record backlog provides us greater demand visibility as we enter the new year and positions us well to execute our growth and profitability objectives for 2022. Our strong Q4 performance was a great way to wrap up 2021, a year in which we were able to navigate an ongoing global pandemic and the increased impact of supply chain disruptions. Despite these headwinds, we executed our planned financial and strategic goals in 2021, including five key accomplishments that I'd now like to highlight. First, we delivered against our major financial milestones. We grew revenue faster than the market despite absorbing four-five percentage points of supply chain impacts. We expanded gross margins by 380 basis points at the high end of our 300-400 basis point goal, despite absorbing 150-200 basis points of increased supply chain costs. We generated positive and improved operating margins and cash flow from operations. Second, we drove commercial success across the customer footprint as we secured new tier one design wins and won new Huawei displacement business. During the year, we announced awards with a very diverse set of global customers, including Virgin Media, Telstra, Telefónica Telxius, Telecom Italia Sparkle, Hatif Libya, and Globe Telecom, among many other awards. Our customer successes in 2021 included a 400G metro win at a major North American service provider. Commercialization of 600G at another tier one ICP and 800G growth at major ICPs and CSPs worldwide. Overall, we had a record bookings and revenue year with ICPs and have grown our ICP revenue at a 30% CAGR since 2019. In subsea, a market characterized by stringent capacity and reach requirements, we grew overall bookings by over 50% in 2021. Third, we expanded our product portfolio, securing design wins and gaining market share with our compact modular platforms, line systems, and metro products. We grew revenue from our 800G ICE6 GX product to the low teens as a percentage of product revenue in Q4, up from high single digits in Q3. We exited the year with over 30 ICE6 customers, a healthy pipeline, and are on track to ramp ICE6 revenue to 20%-25% of product revenue in 2022. In addition, line system bookings, a leading indicator of the future high margin transponder sales, grew by 100%. This was primarily driven by ICE6 deployments. Bookings from our metro portfolio, including the XTM, 7100, and GX platforms, grew by 25% in year. Fourth, we unveiled our suite of vertically integrated coherent pluggables to expand our addressable market by over $1 billion and enable an increase in margins from higher levels of vertical integration in our metro portfolio. In June, we launched the Open XR Forum with initial members Verizon, BT, Lumen, Windstream, and Liberty Global. Over the next couple of weeks and ahead of OFC, we plan to announce other major carriers as new members in the forum. This impressive list of members collectively represents 20% of the global telecom CapEx spend. This is a great start, especially given we only announced the forum in June, and we have a strong pipeline of additional partners interested in joining the forum. Fifth and lastly, to execute our eight by four by one strategy that we laid out at our investor day last May, we organized the company into two business groups, one focused on optical systems and the other on coherent optical modules, with both groups supported by our services organization. We also bolstered the executive leadership team by bringing in industry veterans from Cisco, Dell, Lumentum, and Nokia to accelerate the execution of our growth and scale strategy. Looking ahead to 2022, our goal is to build on the foundation we established in 2021. The industry trends fueling our business remain robust. However, as we begin 2022, the supply chain environment remains challenging, and we expect these supply challenges to persist throughout the year with some relief anticipated in the second half of the year. These supply chain dynamics have reinforced the importance of our strategic focus on vertical integration, enabling us to have greater control over our supply chain. On the demand side, we see four drivers continuing to play out in 2022. First, healthy global service provider CapEx environment will be driven by bandwidth demands, 5G, and the proliferation of deep fiber architectures. Second, a robust 800 gig cycle. Based on the industry analyst forecast, 800 gig is expected to be a long multiyear cycle growing to almost $4 billion by 2025. A recent survey conducted by ACG Research found that 85% of service providers plan to deploy 800 gig solutions by the end of 2023, further substantiating the tremendous demand for 800 gig. Third, new insertion opportunities in the metro and access networks as service providers transition to 400 gig services and drive 100 gig coherent to the edge of the network. Fourth and lastly, an increased level of competitive opportunities to displace Huawei infrastructure. These demand drivers, coupled with the size of our backlog, tier one wins, and growing pipeline, give us confidence that we're on the right track to grow and achieve our target business model in 2023. This model assumes revenue growth of 8%-12% in 2022 and 2023, gross margin expansion of 300-400 basis points per year, and double-digit operating margins in 2023. I'm excited about our best competitive position and our market opportunities ahead of us. We've strengthened our portfolio, bolstered our management team, and are investing to win. In fact, we've set an exciting—we have a set of portfolio announcements planned for this year's OFC in San Diego from March sixth to tenth, where you'll hear more about near-term performance enhancements to our 1.6 terabit ICE6 embedded optical engine, faster ways to integrate and open manage open transponders in multi-vendor networks with our open automation suite, the introduction of our own high-performance vertically integrated pluggables. Today, we also announce that Roop Lakkaraju will be joining our board of directors. I look forward to his contributions as he will work with us every day to drive value for our shareholders. Welcome, Roop. Separately, I would like to thank board members Kambiz Hooshmand and Tom Fallon, who have resigned from the board effective today, for their service to Infinera over the years. I know they will continue to be friends of mine and for the company for years to come. Following these changes, our board will be smaller, more diverse, and reflect a lower average director tenure. As I close today, I want to reiterate how proud I am of the Infinera team's resilience in navigating a tough macroeconomic environment while delivering industry-leading products, record-breaking revenue and bookings, improved margins and cash flow, and winning new customers. The team's unwavering commitment, drive, and support have been personally humbling. I would also like to extend my thanks to our customers, partners, and shareholders for their continued support during a challenging year. I will now hand the call over to Nancy to cover the financial details of the quarter, our Q1 outlook, and the progress towards our target business model. Nancy. Thanks, David. Good afternoon, everyone. I will begin by covering our Q4 results and then provide our outlook for Q1 2022, as well as our planning assumptions for the full year of fiscal year 2022. My comments reflect our non-GAAP results and outlook. For your reference, we have posted slides with financial details, including our GAAP to non-GAAP reconciliation to our investor relations website to assist with my commentary. I am pleased with our performance in the Q4 of 2021, a quarter in which we achieved record revenue and bookings for the company and exited the year with a substantial increase in our backlog. We delivered this performance while navigating a global pandemic and a tough supply chain environment that continue to constrain our top line and put pressure on our margins. Despite these transitory challenges, we accelerated revenue growth to 9% in the second half of the year and remain on course to execute to our 8x4x1 strategy and deliver on our target business model in 2023. Q4 revenue of $401 million was up 13% year-over-year, with strong product revenue growth of 19%, primarily driven by the growth in our 800G ICE6 solution and strength in the Americas and EMEIA regions. We derived 58% of our revenue from international customers, compared to 64% in the year-ago quarter, and no customer contributed to greater than 10% of our revenue. Q4 gross margin of 37.2% came in just above the midpoint of our outlook range, benefiting from higher volumes and the ramp of ICE6, offset by approximately 200 basis points from the impact of elevated supply chain costs and another 200 basis points impact from a higher mix of lower margin line systems. Q4 services gross margin was slightly lower on both a sequential and a year-over-year basis due to higher logistics costs and a higher mix of professional services from an increase in installation projects. Operating profit in the quarter was $17.1 million, equating to an operating margin of 4.3%, which was at the high end of our outlook range. Operating margin benefited from higher revenue, higher gross margin, and good expense control in the quarter relative to the upside we delivered. Operating expenses of $132 million were just above the midpoint of our outlook range, primarily due to higher sales commissions resulting from a very strong bookings and revenue quarter and year. The resulting EPS in Q4 was $0.03 a share. Moving on to the balance sheet and cash flow items, we ended the quarter with $203 million in cash and restricted cash. During the quarter, we generated $1.4 million of cash from operations, down on a year-over-year basis as we accelerated investments in R&D, restored bonuses, paid higher sales commissions, and made strategic investments in working capital, including inventory. Free cash flow in the quarter was -$7.7 million, and we ended the quarter with a $0 balance on our credit facility. As David mentioned in his commentary, fiscal year 2021 was a strong year for us, with notable progress across our business model, new product introductions, customer design wins, and talent acquisition. For the full year of 2021, we delivered revenue of $1.43 billion, up 5% on a year-over-year basis and about 200 basis points above projected market growth. We had a record bookings year and exited the year with product backlog up 100% on a year-over-year basis. We expanded gross margin to 37.6%, up 380 basis points on a year-over-year basis, and at the high end of our 300-400 basis point margin expansion goal. We expanded operating margin to 2.1%, up 260 basis points on a year-over-year basis, and we generated positive cash flow from operations. We delivered these strong results in a challenging supply chain environment, which impacted our top line growth by four-five percentage points for the full year and constrained our gross margin by 150-200 basis points as we absorbed additional supply chain costs. Looking ahead to the Q1 of 2022, we are encouraged by the demand drivers fueling our business. These drivers, combined with our backlog and continued order intake, give us optimism for 2022. At the same time, the supply chain challenges are real and even more intense than what we have experienced in the past few quarters. We expect this supply environment to remain difficult through at least the first half of the year, followed by some relief in the second half as we add inventory and bring up additional capacity. Taking these factors into account, we are forecasting Q1 revenue to be in the range of $345 million-$375 million, representing approximately 8.5% growth on a year-over-year basis at the midpoint of the range, constrained entirely by supply. Sequentially, the revenue forecast for Q1 is slightly better than the seasonality we have experienced over the past three years. We are forecasting Q1 gross margins to be in the range of 37% ±150 basis points, down slightly on a year-over-year basis. Compared to the Q1 of last year, the primary factors influencing our growth margin outlook include a higher mix of ICE6 revenue, which is accretive to the company's growth margin. Is being offset by approximately 300 basis points from the impact of higher supply chain costs as we bear the burden of higher component and logistics costs, and additional capacity and inventory costs as we plan for the continued growth in ICE6 through this year. We are planning for Q1 operating expenses to be in the range of $130 million-$134 million as we increase investments in both our sales organization and R&D to take advantage of the market opportunity ahead of us. Within R&D, we are investing in pluggables, vertical integration, metro platform, and software, areas critical to driving top-line growth and margin expansion. We expect Q1 operating margin to be 0.5% ±200 basis points, approximately flat on a year-over-year basis at the midpoint. During the quarter, we expect to use cash from operations as we match inventory with our backlog. Below the operating income line, we assume about $5 million for net interest expense and $7 million for taxes. Finally, we are anticipating a basic share count of 213 million shares for Q1. In the event that we are profitable on a non-GAAP basis in the quarter, diluted share count should be approximately 223 million shares. Looking ahead to the full year of 2022, we intend to make continued progress toward our target business model and plan to grow revenue by 8%-12%, expand gross margin by 300-400 basis points, and expand operating margin by 200-300 basis points. Furthermore, we are assuming a typical seasonal cadence to our business this year, as well as with a seasonal uptick in revenue and margin in Q2, and expect revenue and margin in the second half of the year to be greater than the first half. I would like to close today by echoing David's thanks to the Infinera team and to our partners, customers, and shareholders for your continued support. We have made tremendous progress these past few years in enhancing the financial profile of the company by putting the right team in place, launching new products, and securing key customer wins. We know we have more work to do, and we look forward to delivering additional shareholder value in the years ahead. Brent, I'd now like to open the line for questions. At this time, I would like to remind everyone, in order to ask a question, press star followed by the number one on your telephone keypad. We'll pause for just a moment to compile a Q&A roster. Your first question comes from David Kang with B. Riley. Your line is open. Hey, Dave. Thank you. Good afternoon. Thank you. I guess my first question is on 800 gig. Customers went from 25- 30, and you're still targeting 20%-25%. I'm just wondering if you can talk about customer concentration. Is that gonna be driven by maybe just a couple of customers or you know more broader than that? No, it's broader. I think when you look at, you know, we don't have any 10% customers now. We could use a little bit more customer concentration. I think when it comes to ICE6 800 gig, we're continuing to win both in this quarter, and we obviously racked up a bunch of design wins last quarter. Customer wins are really across the footprint, both with ICPs and CSPs, with ICPs being a little bit lumpier in terms of larger initial deployments. CSP has taken a little bit longer when they roll new products into their networks. Got it. My follow-up is on 800 gig. 20%-25% for the year. I'm just wondering, you know, what the exit rate will be, you know, in Q4. I'm assuming it's gonna be much higher than 25%. That'd be right on kind of a weighted average basis. Yeah. You know, if you think about us finishing Q4 in the early teens, which is exactly what we said, same as what we had mentioned for finishing in high single digits in Q3, that continues to build quarter -over -quarter -over -quarter with an exit rate that should be greater than 25%, which is why you'll see the margins both in terms of as we build that out, our entitlements become even much better, so our margins get even stronger as we go throughout the year. Thanks, Dave. As a reminder, please limit yourself to one question and one follow-up question. Your next question comes from the line of Alex Henderson with Needham. Your line is open. Great. Thank you very much. I was hoping you could talk a little bit about the pricing environment. There's obviously a lot of rises in costs of supply chain industry-wide. We've heard some players are actually pushing up pricing. I know that's never happened in this industry before, but I was wondering if you're getting any pricing help. And I have a follow-up. That's never helped in this industry, right? Yeah. Look, I don't think we're gonna go through our complete pricing strategy. Our view is right now there's a bunch of customers that are looking to deploy bandwidth. We're trying to give them the price value by heavily working Moore's Law of optical and getting them that price per bit. You'll see some new announcements at OFC which will help even more. We go through kind of a cleanup on our list structure now annually. Again, we're trying to be very careful that we're a market taker in this environment, and we wanna be very cautious of that and continue to drive the impact of our R&D to the lowest cost per bit without, you know, kind of the same impact we're getting from our supply base, on temporary price increases. We are seeing it in the industry. We're gonna be opportunistic to continue to take share while keeping to our margin commitments. The question, and this isn't the follow-up yet, the question really is what are you doing? Exactly. What are you seeing? Are you actually seeing? Can you quantify the price hikes by your competitors at all? We are seeing and hearing from some of our customers that they are being approached by some telecom infrastructure companies with price increases. You know, again, our response to that is we're trying to provide them solutions in an open architecture environment to be able to take share and drive lower costs with newer platforms. Okay. I think all of this is. Yeah, go ahead. The follow-up question I wanted was really on the backlog. I think you said the backlog was up 100%, but I guess I don't have a clarity on what the dollar value of that backlog is relative to the base. I don't know what 100% of what. All right, could you give us a dollar characterization of what the backlog looks like? Hi, Alex. We're not gonna disclose the backlog number per se, but I can share with you that our book-to-bill is meaningfully above one this year, and we're starting the year with great coverage from our backlog as we go into Q1 and for the year. It gives us even more confidence in the revenue growth that we're projecting for 2022. As David said, you know, you'll see that start to grow through the year, quarter- quarter- quarter. We're really pleased that we were able to hit the high end of our outlook range for revenue in Q4 and feel very well positioned as we go into 2022. All right. Thank you. Thanks, Alex. Your next question comes from the line of Simon Leopold with Raymond James. Your line is open. Great. Thanks. Sorry, joined late, so hopefully I'm not rehashing. Quarter was good in December, and I imagine that some of this might have been revenue recognition on projects that you had shipped during the course of the year. Could you quantify where you are in terms of acceptance on new products and how that might have contributed to the reported quarter? Yeah. I would tell you that the over-achievement to the midpoint that we provided in the outlook wasn't just the acceptance. It was actually better execution from the team on actually getting shipments out, heavier flow of bookings than we expected with a nice match to the supply, and just better execution from the team. There has been no change in actually the acceptance criteria or acceptance intervals across our footprint during that time. That's helpful. Then I wanted to just follow up on what you're seeing in terms of component supply issues and drill down a little bit. Part of the reason for this question is that with the PIC architecture, you've got a different build and not like maybe all your peers in terms of your components. Could you maybe double-click on what you're seeing as constraints currently? Thank you. Yeah, no, it's a good question. I think what Nancy had mentioned in her comments is, look, I think we're gonna all live with this supply chain environment for 2022. I think we're beginning to see the back half with commitments that we put in place, as well as commitments we're getting back from the supply chain that are becoming a little bit more reliable for the back half of the quarter. What we are seeing, Simon, is kind of more acute supply chain cost being extracted. Maybe this is the final wave, you know, from folks that are providing call it processors for packet switch architectures. Obviously a lot of our optical stuff is, you know, we have a little bit more under our control. It really is around, you know, think of them as micro-controllers, processors, packet processors, and switch fabrics out in the network space. In comparison to some of our competitors, those might be bigger constraints than we have, but we're obviously mindful that, you know, we've been challenging with them too, but the team executed well in Q4. Thank you very much for taking the questions. Appreciate it. Your next question comes from the line of Alex Henderson with Needham. Your line is open. Hey, Alex. I wasn't expecting to get back in that fast. I haven't got my headset on here. Give me a second. No worries. Hey, back to your last question, Alex, one way you can kind of gauge the kind of buildup that we're having is as we put the K out and have RPOs disclose there that we're just seeing that continue to grow, so our coverage overall for the first half is pretty profound. We also see when we're looking at orders that are coming in, we measure what orders are for this quarter plus one and for orders outside of that. We kind of have a more normalized view of bookings as we go, so we're not getting too far ahead of our skis. Yeah, that's a smart way of doing it. The duration is misleading a lot of people relative to the backlogs. Right I wanted to address the component issue from a slightly different perspective. As you build out your ICE6 production and that becomes an increasing portion of your business, does that have a commensurate impact in reducing your exposure to some of the areas that are, you know, in short supply or particularly constrained? Or is it, as you described a moment ago, just processors that sit around the other elements that therefore is not directly related to the 800G platform per se? Yeah, no, good question. I'd say three follow-on tidbits for you. One, it does kind of happen implicitly as people are gonna transition from legacy platforms quicker to newer platforms, so that is helpful. When they go off the legacy stuff that we might have had a commercial solution and merchant integration, and now we can go into our own vertical integration, that's helpful. We do see customers that are much more sensitive to the age of the profile based on the environment in the supply chain environments, not only you can't get the parts, but many suppliers are coming out and end of life-ing older geometries, which is gonna push people to fresher platforms. Number two, yeah, we still will have some dependence on microprocessors and other things for fans and packet processing in the platform, just less dependent, right? Something that we want to consider. Thirdly, you're aware that when we run our own fab and our own packaging, while we haven't had a huge entitlement bump like we used to, we will see and as Nancy described, we will see a nice entitlement push when we move from Q1 into Q, you know, Q2, Q3, Q4 moving forward from a volume perspective of ICE6. Uh, uh, on the DSP- Did that help, Alex? Absolutely. Exactly what I was looking for. On the DSP side, have you seen a change in pricing behavior out of your primary supplier in the sense that we're understanding that they've raised prices across most of their products by as much as 20%, and including a 10% price hike, effective February first. Have we seen any pricing changes in the DSP supply, you know, that you've gotten from third parties? Yeah, I think we absolutely have, and that, as Nancy talked through, a little bit more pressure on the PPV as we end the year. The good news is when we look at the bill of material for what we do, given what we do in the fab, what we do in the packaging, the DSP itself is, you know, it's a piece of it, but it's not a huge piece of the bill of material. What we've worked on over the last year are ways to countervail that. Again, you'll hear a little bit more about that at OFC to get more again more efficient bits per dollar out of the platform. Okay, thanks, Alex. Apologies. There's actually several people in the queue, Alex. Yep. Thanks. Thank you. Your next question comes from the line of Meta Marshall with Morgan Stanley. Your line is open. I'll jump in before Alex's third turn. Just a question. You know, Nancy, maybe as you look forward to the gross margin outlook for 2022, you know, and calling for the 300-400 basis point uplift throughout the year, you know, how much of that is from kind of supply chain, getting back some of the supply chain costs or those costs mitigating, or how much of that is from the uplift of, you know, ICE6 becoming a greater piece of the portfolio? Maybe second question, you know, just any customer categories that you're expecting to lead growth in 2022. Are there any kind of project-based dynamics like we saw with Tier One that we should just be mindful of that would lead to different kind of growth rates between the categories? Thanks. Sure. No problem, Meta. Yeah, as we look at the trend in margin through the year, and I'm sure you're doing the math just like we do in terms of where we're looking at Q1 and how we exit the year with 300-400 basis points up, it's, you know, we are gonna see the continued improvement quarter-over-quarter. I am planning for, as I mentioned, the first half still remaining very, very tight on supply and having those pressures. We may see some relief in the back half, but really it's the continued ramp of ICE6 and that margin impacting from the vertical integration to our overall gross margin for the company. You'll see it be kind of another two halves, right? First half, the second half really stepping up in the gross margin. On the customer category piece, I'd say, you know, we continue to see strong uptake from the ICPs in this open line system environment. We're now seeing that in CSPs worldwide. We had a number of Tier One design wins last year, and we continue already this year with those. We expect to be ramping those as we exit the quarter, which you should see some relief in that tier one category that you're talking about, as well as continued strength in the ICPs, a very, very strong business in Europe, and, you know, we're looking to amp up our presence in Asia. Great. Thanks. Thanks, Amanda. Operator? Your next question comes from the line of Rod Hall with Goldman Sachs. Your line is open. Hey, guys. Thanks for taking my question. This is Bala on for Rod. Congrats on good results, by the way, especially in this environment. David, I want to start off with 800G mix. It was high single digits last quarter. It's now in low teens in Q4 and full year 20%-25%, which probably indicates that ending the year it will be about 30% ICE6 mix. So you mentioned new customer wins, but just wondering, what's the visibility for this 20%-25% ICE6 mix do you have, either in the form of existing backlog or orders or even pipeline that I have follow up? Excellent. Yeah. All of the above, but quite a bit of pipeline, but quite a bit of backlog. I mean, we have existing backlog for the product. We have design wins that we, you know, we haven't yet deployed and reached the orders for, and we have a growing pipeline of opportunities. So it's a nice mix. Again, it's a nice global mix, and it's a nice mix between CSPs and ICPs. But a substantial backing of backlog to back up the confidence in that 20%-25% number, as well as a couple of quarters now of revenue hitting where we said it would hit in terms of its percentage of revenue. So we feel pretty solid there. Very good. Again, competition in 800G. You mentioned 30 customer wins for the year. Just wondering how many of them were against what those that you went head-to-head against your major U.S. competitor? Yeah, look, in an open architecture environment, the best transponder wins. We're not, you know, keeping public score of how many of those are there, but very few of our customers go into a single supply scenario. They're all competitive environments. They look for, again, the best solution, the lowest cost per bit. Some people may be trying to provide that via 400 gig. Some people may be providing it via a single wave 800 gig. We just tend to provide it in a 1.6 terabit two-wave 800 gig platform. It's a mix. Got it. Thanks, Bala. Thanks so much. Your next question comes from the line of Jim Suva with Citigroup. Your line is open. Thank you. I just have one question. A lot of the discussion was focused on gross margins, which was rightfully so. Could we just take it one level a little bit lower and focus a little bit on operating margins, kind of as the year progresses? Because I would assume you're seeing some inflation or salary payroll increases or R&D or something. Can you talk to us about the gross margin flow through? Should we expect a similar flow through to operating margins, or do we need to adjust for some inflationary environment for operating margins? Thank you. No, great question, right. We are expecting for the year, as I mentioned in my comments, 200-300 basis point improvement year-over-year on operating income. Certainly we are planning for, as everyone is in this inflationary environment, step ups in certain expenses there. Managing through those as we did in fiscal year 2021 really carefully in terms of our expense profile. You will see us step up investments in sales and marketing as we go after the market growth. We, you know, need to do some further investing there. In addition to the ongoing R&D and pluggables, and metro and software, as I mentioned, because we really want to see that vertical integration percentage go up, to be able to flow through to the bottom line. You can expect 2-3x what we did in fiscal year 2021 for 2022 in terms of operating margin. Thank you so much. Thanks. Your next question comes from the line of Tim Savageaux with Northland Capital Markets. Your line is open. Your next question is- Hey, Tim. Go ahead, Tim. Am I still there? Yep. Yeah, we hear you. Okay, great. Got to be quick on the draw here. I want to go back to. I'll forget it again. We're having some technical challenges. Go ahead. I want to go back to 800G mix here and try and get underneath those dynamics a little bit. I don't know if you've given a contribution for the full year 2021, but given, you know, what you've said about the second half, I'm going to assume we're in the, you know, mid-single digits or maybe mid to high. So you're looking at a pretty dramatic increase in 2022. I guess the overall question is how incremental is the 800G business to the total business? I mean, looks like it could grow as much as four-fold, certainly 3.5-fold. In 2022, obviously, you know, you're cannibalizing some of the older stuff. You know, would you, do you look at these dynamics of more, you know, bringing in new customers with 800 gig or maybe current customers transitioning from previous generations? When you net that out, you know, what kind of overall growth dynamic do you see? Yeah, it's a good question. I, you know, again, overall, you know, we see the 800G ICE6 product line, you know, pretty confidently hitting that 20%-25%. As you said, some portion of that is people moving from previous generations, whether they're ours or, if more hopefully for us, our competitors. As people roll off the older technologies, we've kinda baked that into our overall growth rate, so that 8%-12% does include any kind of single digit falloffs, which, you know, typically happens in older product lines as you go through the cycle. Again, higher pickup with the ICPs and with CSPs just taking a bit longer to onboard into their environment. Right 8%-12% includes that offset. Yeah. That's sort of a netting. And that's, you know, most of your competitors, and I think some of this is supply catch-up, and maybe this is true for you guys as well, are looking to grow kind of in that, you know, double-digit, low double-digit area. I mean, as you look at, you know, Infinera's growth relative to the overall market, I mean, do we need to kind of normalize for those supply issues and look for an above trend growth there this year? Or, you know, you're talking about that growth being sustainable into 2023. Or I guess it's a long way of saying- Yeah, good question. Has your view of market growth, kind of baseline market growth changed or accelerated a bit? Yeah. It's we've probably accelerated that. I mean, look, we came back in April, May in our Analyst Day and said we were gonna grow at 8%-12%, and many people in the after calls suggested we might wanna go calm down a little bit, right? We saw that based on the market dynamics of what was going on with OpenXR, the growth of 800G, you know, the open line system growth, and our line system bookings, which grew 100% year-over-year. We do believe we're gonna grow faster than the market. The market says, the analysts today say 3%-3.5% growth for this year. I just don't buy it. You know, I think the market will probably grow more like 5%. I think there are winners and losers in the market. There are certainly people that are gonna lose share, like the Huawei infrastructure opportunity. You know, that's a substantial portion of the market. It's $2 billion outside of China annually. You know, I expect the market analysts to change. You know, I'll wait for them. They'll change their view on real numbers, but I expect that to maybe move from 3.5%, maybe up to 5%, and we still expect to grow well above that. I do expect, and we said back in May of last year, we expected that to continue into 2023. You know, I don't think that. We measure our bookings and what we think are people, you know, stocking for a later period very carefully. You know, we feel good about that 8%-12% growth rate, you know, in 2022, and the continuance as long as we keep our heads down and execute, do the right thing for our customers and shareholders. Thank you, Tim. Okay. Thanks very much. Your next question comes from the line of George Notter with Jefferies. Your line is open. Hi, guys. Thanks very much. I guess my question, I was wondering what the mixture of vertically integrated products was in Q4. I think you guys had given us that number in the past. You gave us the ICE6 piece certainly, but I'd love to know what the bigger number is for overall. Yeah. Give me one second. One second. We're pulling it up right now. Yeah, it was in close to the mid-40s, George, in the quarter. Okay. Got it. If memory serves, you were also close to mid-forties in Q3. It sounds like the growth in ICE6 is coming at the expense of, I presume, the heritage DTN-X product. Is that the right read here? No Am I missing something? No. Remember, it's also on a lower number. I think what we're seeing is new opportunities. We didn't see a precipitous decline from Q3- Q4 on that. You know, we were in the, I wanna say it was 42 or 43% in Q3, and then in the mid-45, 46% in Q4, which obviously on a higher revenue base. No, I wouldn't make that as a foregone conclusion. Got it. Okay. It's a mix of new customers and then Correct you know, existing. Then, I guess I also wanted to ask about, you know, the XTM portfolio. You guys didn't say much about it here. I know metro's been a source of growth for you guys in recent quarters. That is not a vertically integrated product. I know you guys are looking to redesign XTM, but do you guys have a sense for when those redesigned products will come into the marketplace and help you kinda juice that vertically integrated mix? Yeah, we do. When we did our Analyst Day, we talked about a great year we had, record year with XTM bookings. Overall metro grew 25%, and I believe it was about 45% of our overall bookings. Product bookings. Product bookings. As we get into 2023, you'll hear a little bit at OFC about our pluggable, that we will have our own CFP2 and QSFP-DD Pluggables available to be able to provide 400 gig ZR+ as well as our XR point-to-multipoint, of which that forum is growing. That will start phasing in in the first half of 2023, and should significantly improve our margin profile. Those CFP2s can be used on older products as well as newer products. Got it. Very good. Thank you very much. Thanks, George. Your next question comes from the line of Samik Chatterjee with J.P. Morgan. Your line is open. Yep. Hi, thanks for taking my questions. Have a couple here. Just starting first one with just a broader one. I know the 8%-12% you're guiding for revenue growth in 2022, I mean, that's a strong growth guidance in itself, but that's more in line with your long-term guidance that you had presented at the Analyst Day. When we look- Yeah. Across most optical companies that have talked to date during this earnings season or recently, most are expecting to exceed their long-term growth rates over the next 12 months given some of the pent-up demand that we are seeing. Just wanted to get your thoughts around that. I mean, this is still a good growth number, but why not more upside to your long-term growth rates? And I have a follow-up, but please go ahead. No, I appreciate the comment, but we also are empathetic to others in this industry that, you know, when you have a supply chain shortage and miss your number, you guys aren't very happy, so nor our shareholders. You know, I think we've done a good job, as you saw with last year and with Q3 and Q4, the back half grew at 9%, Q4 grew at 13%. We're just not trying to get ahead of our skis. Again, we're very, very in tune with our supply chain environment, and we wanna provide you the right range as we go. As Nancy said, that 8%-12% was entirely constrained, in our outlook, was constrained by supply, which we expect to continue through 2022. We might see some light as we get to the back half just based on inventory that's been provisioned and some of the activity we see amongst the supply base of starting to give a little bit clearer of a picture of how capacities are gonna be met, but it's too early to tell that. 8%-12% is pretty good. Our intention is always to beat that, you know, like we came at the high end of the range in Q4. Follow-up, I mean, yeah, you did have some Huawei displacement, revenues already starting to creep in in 2021. How should we- Yes. Interpret the magnitude of that in 2022? How much of a contribution is it from that aspect in 2022? Yeah. I think when we did our Analyst Day, we kinda had a bar chart that we had an indicative view, and it hasn't really changed actually. So we see it, you know, it was a nice taste, a nice appetizer in 2021, but I think we said all along we would see the design wins and RFPs really scaling, and we thought that we'd see revenues from that really beginning to take hold as we got into 2023. We did contemplate that way back in May when we gave you our 8%-12% growth rate. Okay. Thank you. Thanks for taking my question. No, thank you. Again, if you would like to ask a question, press star one on your telephone keypad. Your next question comes from David Kang with B. Riley. Your line is open. Oh, thanks again. Nancy, I may have missed it, but Q4, what was the impact on? You talked about margin impact, but what about revenue impact? Was it approximately $20 million, as you said before? Yes, in that range. We did still have constraints on our revenue in Q4 because of supply. Got it. My follow-up is, you said the supply impact was about four-five points for 2021. Yeah. Should we expect, you know, nearly all of that four or five points to be shifted to next quarter, so it's more like 8% or 6%, on top of that you're adding back 4% from last year? You're, you know, that's how you get to, like, 10% growth this year? Something like that? We expect in this supply chain environment that backlog and lead times are extended, and backlog is gonna continue to. We're gonna bleed off the older backlog as the lead time hits, and we'll be building out new backlog for the future. We're not, you know, our view, you know, all along was the 8%-12% growth. If the supply chain environment attenuates and we can overachieve that'd be great, but right now, we don't think it's prudent to call that. Got it. Thank you. Thanks. Thanks, Dave. There are no further questions at this time. I would like to now turn the call back over to Mr. David Heard. No, thanks. Appreciate the thoughtful questions, appreciate the engagement. You know, 2021 was a great year for Infinera. You know, we achieved our financial targets, demand was robust, new products ramped nicely, and our momentum with customers continued to build and continues to build as we sit here today. We feel good about our position and the opportunity in the future for both our financial targets and our strategic goals. We couldn't do that without the extended, global Infinera team, our suppliers, our customers, and again, our loyal shareholders. Thank you all, and be safe, be well. We look forward to a bright 2022. Thank you. Ladies and gentlemen, thank you for your participation. This concludes today's conference call. You may now disconnect.