“As we've said in the past, we expect AWS operating margins to fluctuate over time, driven in part by the level of investments we're making.”

In context

“our AWS segment, revenue was $28.8 billion, an increase of 19% year over year. AWS now has an annualized revenue run rate of $115 billion. During the fourth quarter, we continue to see growth in both generative AI and non-generative AI offerings. As companies turn their attention to newer initiatives, bring more workloads to the cloud, restart or accelerate existing migrations from on-premise to the cloud, and tap into the power of generative AI. Customers recognize to get the full benefit of generative AI, they have to move to the cloud. AWS reported operating income of $10.6 billion, an increase of $3.5 billion year over year. This is the result of strong growth, innovation in our software and infrastructure to drive efficiencies, and continued focus on cost control across the business. As we've said in the past, we expect AWS operating margins to fluctuate over time, driven in part by the level of investments we're making. Additionally, we increased the estimated useful life of our servers starting in 2024, which contributed approximately 200 basis points to the AWS margin increase year over year in Q4. Now turning to our capital investments. As a reminder, we define these as a combination of cash CapEx plus equipment finance leases. Capital investments were $26.3 billion in the fourth quarter, and we think that run rate will be reasonably representative of our 2025 capital investment rate. Similar to 2024, the majority of the spend will be to support the growing need for technology infrastructure. This primarily relates to AWS, including support demand for our AI services, as well as tech infrastructure to support our North America and international segments. Additionally, we're continuing to invest in cap”