Who’s the Largest? The Debate Is On

Depending upon whom you ask, or which industry experts you follow, longtime leader Amazon Web Services continues to rank as the world’s largest public cloud provider.

Over at Gartner, AWS still holds the top spot — for infrastructure as a service, in specific. Analysts made that call after evaluating last year’s overall revenue (a common methodology in the research world, even though we’re now seven months into a new year).

According to Gartner, AWS racked up $35.4 billion in revenue in 2021, giving it almost 39% market share. That put Microsoft Azure in second place again, with 21% share and more than $19 billion in IaaS revenue.

Again, that market-sizing assessment depends on your resource. IDC, for example, said in June that Azure has (again) passed AWS to take the crown.