Amazon Drive Is Shutting Down at the End of 2023, but Your Photos Are Safe
petapixel.com
petapixel.com
https://borncity.com/win/2020/08/28/amazon-kappt-synology-na...
From the migration guide they sent to synology users via email back then:
For other files:
1. If you haven't already, download the Amazon Cloud Drive app. Or, you can use the web version by visiting: https://www.amazon.com/clouddrive.
Check to see if your content includes encrypted files or special file formats. If your files are encrypted, you'll need to save the content in a different format. ...
2. Upload your unencrypted content to Amazon Drive, using the app or website.
(Again, this was back in 2020...)