Deploying Solidus on AWS isn't meaningfully different than deploying any other Rails application on Solidus. The one gotcha people run into is that you need to make sure that the S3 bucket you store your images in is set up so ActiveStorage will generate public URLs, as Solidus's default frontend will cache those URLs, so if they are expiring URLs it'll break.

public URLs it’s the only way? could not we have permanent url by using support of activestorage for proxy?

there are probably lots of ways to solve this, but public URLs are probably the easiest