Signed URLs provide secure a way to distribute private content without streaming them through the backend.

What is the main advantage to a pre-signed URL?

A presigned URL gives you access to the object identified in the URL, provided that the creator of the presigned URL has permissions to access that object.

What is a pre-signed URL?

A presigned URL is a URL that you can provide to your users to grant temporary access to a specific S3 object. Using the URL, a user can either READ the object or WRITE an Object (or update an existing object). The URL contains specific parameters which are set by your application.