What design pattern should I use for using Cloudstorage like S3 and/or Azure Blob?

So I'm building up an emailing system which retrieves incoming email with attachments and also responding to emails requires saving and storing attachments into azure blob and/or aws s3 storage...

I have two controllers, CommentsController, TicketsControoler this both controllers needs to use Azure API or AWS Storage to store and reterive files.

What is a good design pattern to use in this scenario?

I'm thinking a repository pattern which I will inject into the controllers.

please advise.