"I like Linux and Amazon, hence Azure must be bad. I assume, I've never seen it." is something I've heard commonly.
I have a customer where they use both clouds, and they will spend weeks spinning up Rube Goldberg machines in AWS even though there is a turnkey solution available in Azure.
For example, Elastic File System (EFS) in AWS is only compatible with UNIX-like operating systems, because it is NFS v4. Azure has both NFS and SMB file shares as a service -- the latter is a unique offering. It's not magic, but it does eliminate quite a bit of complexity around managing large, scalable file server clusters for Windows clients if you need that kind of thing.
