Cloud Providers and Operating Systems Supported by Cloud-Init and CloudBase-Init

Cloud-Init and CloudBase-Init offers quickest way to customize operating systems. Cloud-Init is for Linux Distributions and CloudBase-Init is for Windows Distributions. Here is link where one can find the list of Cloud Providers and Operating Systems supports these tools.

Cloud-Init 
https://cloudinit.readthedocs.io/en/latest/topics/availability.html

CloudBase-Init
https://cloudbase.it/cloudbase-init/