Tom Leighton
Chief Executive Officer at Akamai Technologies
Thanks, Tom. And thank you all for joining us today. I'm pleased to report that Akamai delivered strong results in the fourth-quarter, exceeding the high-end of our guidance range on both the top and bottom-lines despite ongoing challenges with the global economic environment. Q4 revenue was $928 million, up 6% year-over-year in constant-currency. Our revenue growth was driven by continued strong demand for our security products, our fast-growing compute business and by higher-than-expected delivery traffic. Security and compute accounted for 55% of our overall revenue in the fourth-quarter and grew a combined 22% year-over-year in constant-currency. Non-GAAP operating margin in Q4 was 28%. Q4 non-GAAP EPS was $1.37 per diluted share, down 2% year-over-year in constant-currency.
For the full-year, revenue was $3.62 billion, up 8% over 2021 in constant-currency. Non-GAAP operating margin was 29%, down from 32% in 2021 and slightly below our goal of 30%. The decline last year was due to the impact of foreign-exchange, the challenging macroeconomic environment, the investments we made to grow Guardicore's segmentation product and the rising cost of third-party cloud services.
As Ed will describe in a few minutes, we're taking several actions to reduce costs and to shift resources to areas with the strongest potential for growth, such as cyber security and especially cloud computing. Going-forward, we anticipate that our margins will likely remain slightly under 30% in the near-term. And our goal is to grow margins back over 30% during the medium-to-long term.
Non-GAAP EPS last year was $5.37, down 1% over 2021 in constant-currency. 2022 was another strong year for cash generation at Akamai with $816 million in free cash flow, representing 23% of revenue. Akamai strong cash generation enables us to make strategic acquisitions, while also returning value to shareholders. In 2022, we spent $608 million to buyback 6.4 million shares. Over the last 10 years, we've reduced the number of Akamai shares outstanding by approximately 21 million or 12%.
I'll now say a few words about each of our three main lines of business, starting with security. Our security products generated revenue of $400 million in Q4, up 14% year-over-year in constant-currency. For the full-year, security revenue reached $1.54 billion and grew 20% over 2021 in constant-currency. We saw especially strong growth through our market-leading Guardicore segmentation product, with revenue reaching $68 million for the full-year. New segmentation customers in Q4 included one of the largest insurance companies in the US, a leading Internet services conglomerate in Japan and one of the largest banks in Scandinavia.
Enterprises are choosing our segmentation solution because of its ability to protect against ransomware and data ex filtration attacks and also for the visibility it provides into their internal infrastructure. These are also among the reasons that Akamai was named as the leader in the Forrester New Wave for micro-segmentation last year.
We also saw a large wins for our market-leading application security solutions in Q4, including one of the UK's largest multinational energy companies, one of the big three multinational banks in Singapore, and two of the largest tech hardware companies in the US. Overall, security accounted for 43% of our revenue last year, up from 39% in 2021. In 2023, we expect security to become our largest line-of-business. This represents a significant milestone in our evolution since we pioneered the CDN marketplace 25 years ago.
That said, and as the security business becomes larger and with customers becoming more cost-conscious due to the challenging macroeconomic environment, the growth rate of our security business has slowed, a trend that we anticipate will continue over the coming year. As you might expect, we're working hard to realize the full potential of our security business, both in terms of growth and efficiency. For example, we're in the process of moving the compute components of our security products from third-party cloud providers to our new Akamai Connected Cloud platform, a transformation that will save us a substantial amount of opex over the next several years.
We're redeploying resources within security from lower-growth areas to high-growth areas such as segmentation. And we're redeploying go-to-market resources to achieve stronger cross-sell and penetration within our existing base. We're also working more closely with partners to drive better adoption among new customers and we're continuing to innovate new capabilities, such as our recently released Account Protector and our new Brand Protector solutions to keep our customers safe amidst a rapidly evolving attack landscape. While we believe that our security business will continue to generate strong returns for our shareholders, we foresee an even bigger opportunity in cloud computing and its potential to return Akamai to double-digit top-line growth over the longer-term. Our compute business performed well in Q4, with revenue of $112 million, up 65% year-over-year in constant-currency. For the full-year, compute revenue was $405 million and grew 64% over 2021 in constant-currency.
Earlier today, we unveiled Akamai Connected Cloud, our massively distributed platform for cloud computing, security and content delivery. Akamai Connected Cloud links Linode's 11 core datacenters with Akamai's 4,100 Edge computing locations. In addition, we are in the process of building out 14 more core enterprise scale datacenters with at least three expected to come online in the next few months. We believe integrating these core cloud computing datacenters with our unique Edge platform will allow us to offer customers better performance, greater scale and lower-cost for enterprise workloads. We also plan to have our new Virtual Private Cloud capability and the first of more than 50 distributed cloud computing sites available in the second-half of the year. The distributed sites will enable us to bring cloud computing much closer to end users around the world, which will further enhance the performance benefits of Akamai Connected Cloud.
Of course, and as Ed will describe shortly, we'll be incurring substantial capex and co-location costs associated with the build-out of our compute infrastructure over the near-term. We're also in the process of re-tasking approximately 1,000 positions, or about 10% of our workforce to spend the majority of their time working on the development, deployment support and go-to-market efforts associated with Akamai Connected Cloud. Because of the natural synergy and close integration between cloud computing and our existing edge platform, we believe we can accomplish this transformation without adding significant headcount to the business. This year we will also further enhance the efficiency of our delivery business.
We're undertaking this ambitious investment in Akamai Connected Cloud because we believe it will create substantial value for shareholders in the medium and long-term. We expect to achieve nearly $0.5 billion in revenue from compute in 2023. And the investment we're making this year, should help drive that number substantially higher in 2024 and beyond, as we use the new capabilities and capacity to support mission-critical enterprise workloads.
I think it's worth noting that Akamai is taking a fundamentally different approach to the cloud computing market than providers who base their platforms solely on core datacenters. Our strategy is to offer the world's most distributed platform, placing compute, storage, database and other cloud services closer to end users and enterprise datacenters. As IDC's VP of Research, Dave McCarthy says, the clouds next phase requires a shift in how developers and enterprises think about getting applications and data closer to their customers. It redefines how the industry looks at things like performance, scale, cost and security as workloads are no longer built for one place, but are delivered across a wide spectrum of compute and geography.
IDC adds that, Akamai's innovative rethinking of how this gets done and how it is architecting the Akamai Connected Cloud puts it in a unique position to usher in an exciting new era for technology and to help enterprises build, deploy and secure distributed applications. We couldn't agree more, distributed applications require a distributed architecture. Akamai's leadership position at the edge of the Internet, enables us to scale just about everything we touch. We scale content, putting digital experiences closer to users than anyone. We scale cyber security, keeping threats farther away from business and people. And now, we're building on Akamai's 25 years of experience with scaling and securing the Internet for the world's largest enterprises, so we can scale cloud computing and provide better performance at lower-cost.
Although we still have much work to do, we're encouraged by the reaction from customers who want to realize the value of our approach. Last quarter, a well-known digital fitness platform brought business to us that they previously did with a major cloud provider. They chose Akamai Connected Cloud because we can optimize their performance and provide better economics. When a gaming company suffered a DDoS attack that took out their internet relay chat servers, they turned to Akamai Connected Cloud to get back online.
After utilizing connected cloud for a few weeks, they also migrated their peer-to-peer matchmaking servers to Akamai. This is what they say to other gaming businesses with similar use cases. Our adoption of Akamai's cloud computing solution was painless and turnkey. Akamai has a great backbone network and the connective layer between our global servers has been rock-solid. With Akamai's extensive global network, we provide a better experience to our gamers by delivering from the edge and reducing latency. With Akamai, there's no reason to go anywhere else. As you can see from this example, there's a strong synergy between our emerging cloud computing business and our delivery and security businesses, especially for customers in the gaming, media and commerce verticals.
Turning now to content delivery, our CDN business generated revenue of $415 million in Q4, down 8% from Q4 in 2021 in constant-currency. For the full-year, delivery revenue was $1.67 billion, also down 8% year-over-year. Traffic on the network was better-than-expected in Q4 reaching a new peak record of 261 terabits per second on December 14, as we supported more than 50 customers globally in delivering the World Cup, along with other streaming, gaming and software download businesses. This World Cup was the first time in Akamai's 25-year history, when we delivered more than an exabyte of data for an event. How much is an exabyte? It's 1,000 petabytes. That's one billion gigabytes. For the person transcribing this call, that's one byte with 18 zeros after it. That's a lot of zeros and a lot of traffic. I doubt if anyone has managed such a feat before. Once again, Akamai finished the year as the CDN market-leader by far as we continue to support the world's leading brands by delivering reliable, secure, high-performing online experiences.
Looking back at 2022, we're pleased that we continued to grow the business and add significant new capabilities in the face of serious global macroeconomic challenges. Today, we are redefining our future with Akamai Connected Cloud to become the world's most distributed cloud platform with leading solutions for delivery, security and cloud computing. With our expanded strategy and business model, we believe that we're on a path to provide even greater value for shareholders and to make Akamai the cloud company that powers and protects life online.
Now, I will turn the call over to Ed for more on our Q4 and full-year results and our outlook for 2023. Ed?