Amazon.com‘s (NASDAQ: AMZN) all-important Amazon Web Services (AWS) segment has been the undisputed leader of cloud infrastructure, by far, for years. The most recent third-party estimate from Canalys pegs AWS global market share at nearly 34% in the fourth quarter, larger than the next three largest competitors — Microsoft (NASDAQ: MSFT), Alphabet (NASDAQ: GOOG) (NASDAQ: GOOGL), and IBM — combined (31%).
Competition is heating up, and rivals are starting to chip away at AWS’ dominance.