Kubernetes is supposed to be cloud vendor agnostic; the cloud vendors counter that by having extension operators to create some tie in to the kubernetes deployment of their making.
I guess the 'kubernetes' way would be to create a generalized object for 'object store', that would be implemented by means of s3 on aws and on azure it would be done as blob storage.
Now with this approach you can only do the common features between all platforms, you would have a problem with features exclusive to aws for instance, or you would need some mapping from a generalized CRD object to specific implementation of each platform.
I guess the 'kubernetes' way would be to create a generalized object for 'object store', that would be implemented by means of s3 on aws and on azure it would be done as blob storage.
Now with this approach you can only do the common features between all platforms, you would have a problem with features exclusive to aws for instance, or you would need some mapping from a generalized CRD object to specific implementation of each platform.