So...are we closer to getting to use S3 as a...you guessed it...a database? With CAS, we are probably able to get a basic level of atomicity, and S3 itself is pretty durable, now we have to deal with consistency and isolation...although S3 branded itself as "eventually consistent"...

There was a great deal of interest in gossip protocols, eventual consistency, and such at Amazon in the mid oughts. So much so that they hired a certain Cornell professor along with the better part of his grad students to build out those technologies.

People who want all those features use something like Delta Lake on top of object storage.

S3 is strongly consistent since 4 years ago. https://aws.amazon.com/blogs/aws/amazon-s3-update-strong-rea...