Callback called twice on completion of upload using s3.upload · Issue #1617 · aws/aws-sdk-js · GitHub
AWS S3 | Unit
Create an S3 bucket and upload objects using both the Command Line Interface (CLI) and Application Programming Interface (API) methods | by anonymous-gtx | Medium
AWS S3 Object Copying Between AWS Accounts
Processing file upload notifications from AWS Storage Gateway on Amazon S3 | AWS Storage Blog
Patterns for building an API to upload files to Amazon S3 | AWS Compute Blog
Managing Private Files With AWS S3 | by Hernan Reyes | Better Programming
Replacing existing files with S3 overwrite function