alt Hacker NewsAWS rarely acquired startups, though leveraging someone else's tech is a typical pattern. It did license ParAccel and sold it as Redshift. It also runs Athena, which is based on Trino (a Presto fork).
Now, with Snowflake and Databricks earning big bucks in the intelligence era, time to gain market share by having DuckLabs under its ownership?
Also repackaged Blazegraph as Neptune (the original project was shut down after acquisition).