Generate a Presigned URL in S3 and Lambda - NodeJS Tutorial

The best practice is to set all objects in S3 private. You can use IAM policy to provide a user with the appropriate permissions. In addition to this, you can also create a presigned URL - meaning users can interact with objects without the need for AWS credentials or IAM permissions.
Apresigned URL is a URL that you can provide to your users to grant temporary access to a specific S3 object. A pre-signed URL uses three parameters to limit access to the user: Bucket, Key and Expires.

00:00 Introduction
00:25 SignedURL - Get Object
06:10 SignedURL - Post Object
09:56 Code Repository

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