[iamlintaoz]

That's exactly the reason. S3 is better in almost all aspects compared with EBS, except the performance part, and I am glad that our Data Substrate technology solved this issue gracefully [1].

As for the compatibility, we are leveraging some of the code from 4.03 version (the last AGPL version), and we have a very good compatibility (we will show some results in later blog posts). As I mentioned in another reply post, the Mongo APIs are reasonably stable over the last few years, only seeing very minor changes. Most of the later versions improved upon performance and transaction supports, which we support natively with our underlying data substrate technologies. Still, if you have any specific API that you feel is needed, we'd be happy to implement and we welcome community contributions.

Multi-master/multi-writer means it is a fully distributed database. Of course you can run it in single node configurations and get all the single node benefits, but if deployed in a cluster, you do not need to worry about which node to write to, or how data are sharded. If you writes potentially can cause conflicts (i.e. write to the same data at the same time on different nodes), the concurrency-control will handle that for you. In fact, you will encounter the same issue even in a single node configuration, since a single node is still multi-threaded.

[1] https://www.eloqdata.com/blog/2025/07/16/data-substrate-bene...