Cloud computing is a way to place their infrastructure into a modern way to one or different Hyper-Scalers.
The top three Hyper-Scalers are Azure, AWS and GCP.
The Magic Quadrant for Cloud Infrastructure and Platform Services based on the Gartner Website shows the following.
Comparing products is a little simpler because the three Cloud Service Providers offer a very similar range.
If one launches a new product ahead of its competitors, you can be almost certain the other two will release a similar product within a short space of time. What is more important in an AWS vs Azure vs Google product comparison is how the products interact with each other.
ZFS / Avere