[miaklesp]

Of all possible names they managed to choose already obsolete name for a similar product from Azure?

Azure in 2017: forget DocumentDB, Cosmos DB is the new thing now!

AWS in 2019: We just released DocumentDB!

Are they so geniuses or so idiots?

[0xFFFF0000]

I had the same observation (although I'd reconsider your wording, that's not very polite). It doesn't seem like a good choice in naming - especially because many of the Data Platform folks at Amazon (like their VP) came from Microsoft's data platform group.

[miaklesp]

UPDATE: They are idiots.