I work in this space. If you count VMWare on-prem deployments, Azure and GCP are 3rd and 4th, respectively. Amazon's dominance is massive, Azure exists because

I work in this space. If you count VMWare on-prem deployments, Azure and GCP are 3rd and 4th, respectively. Amazon's dominance is massive, Azure exists because Microsoft gives it away for free with big Windows and Office purchases, and GCP putters along last due to perceived bad customer service (which is kind of true)