AWS is the largest cloud service company in the world and could have the most to benefit as clients move to the cloud. There is a shift to the cloud One theme CEO Andy Jassy mentions at almost every opportunity is the shift to the cloud. Amazon Web Services (AWS) is Amazon's cloud solutions business, and it's the largest in the world, with 30% of the market, according to Statista. It's one of the company's fastest-growing segments, up 17% in the 2025 first quarter, and it's responsible for most of Amazon's ...