Aws S3 Filter by Tags. Search by tags

I also hoped that AWS will eventually support "search files by tags" because that would open up possibilities like e.g. having a photo storage with the names, descriptions, location stored in tags so I wouldn't need a separate database.

But, apparently AWS explicitly is not supporting this, and will probably never do so. Quoting from their storage service white paper:

Amazon S3 doesn’t suit all storage situations. [...] some storage needs for which you should consider other AWS storage options [...]

Amazon S3 doesn’t offer query capabilities to retrieve specific objects. When you use Amazon S3 you need to know the exact bucket name and key for the files you want to retrieve from the service. Amazon S3 can’t be used as a database or search engine by itself.

Instead, you can pair Amazon S3 with Amazon DynamoDB, Amazon CloudSearch, or Amazon Relational Database Service (Amazon RDS) to index and query metadata about Amazon S3 buckets and objects.

AWS suggests using DynamoDB, RDS or CloudSearch instead.

There seems to be one way to achieve what you're looking for, although it's not ideal, or particularly user-friendly.

The AWS S3 tagging documentation says that you can grant accounts permissions for objects with a given tag. If you created a new account with the right permissions then you could probably get the filtered list.

Not particularly useful on an ongoing basis, though.