How to Copy an S3 Object Securely Using a Pre-signed URL and AWS CLI: A Step-by-Step Guide

What is a pre-signed URL?

Pre-signed URLs are a feature of Amazon S3 (Simple Storage Service) that allow you to grant temporary access to a specific object stored in an S3 bucket. This temporary access is granted via a unique URL that contains a signature, which is valid for a specific period of time, specified by you.

Pre-signed URLs can be useful for a number of reasons. Here are a few examples:

1. Controlled Access: Pre-signed URLs allow you to provide temporary access to specific S3 objects without giving out your AWS credentials. This is useful when you want to share a private S3 object with someone outside of your AWS account, but you do not want to grant them full access to your account.
2. Time-limited Access: Pre-signed URLs are valid only for a specified period of time. This means that you can control how long a user has access to a specific S3 object, which can be useful for scenarios where you need to grant temporary access to files for a limited time.
3. Secure File Transfers: Pre-signed URLs enable secure file transfers by providing a secure and unique URL that can be used to access S3 objects without requiring access keys or any other credentials. This is useful when you want to…