Active Storage has greatly simplified file uploads for Rails applications: it has become the de facto standard replacing alternatives that were dominant back in the day like Paperclip or CarrierWave.

Out of the box, it comes with everything we need to handle file uploads, including cloud services like Amazon S3.

In this article, we will learn how to add direct uploads to a Rails app using Active Storage.

https://avohq.io/blog/rails-s3-direct-uploads