Amazon's desktop app provides drag-and-drop access to its Cloud Drive service.

Competing with Dropbox, Amazon Cloud takes measures one step further -- integrating with its online store to provide over-the-air media access, like SugarSync, Mougg and AudioBox.

Amazon Cloud Drive sounds great, if you don't mind giving Amazon the right to do pretty much anything they want with your account and files.

Find and select ‘Amazon S3’ from the list of cloud services (Amazon Photos uses Amazon S3 for storage). Follow the instructions to authorize MultCloud to access your Amazon Photos account.