Hi!
Two things become apparent:
- people who founded the Presto Foundation are not just some former facebook employees who took part in developing the the project -- David, Dain & Martin are people who founded the project (and now founded the Presto Foundation) and wrote major part of the codebase
- from top 10 committers, only 2 are still working on Presto at Facebook (.... positions 8th and 9th)
Facebook continues to develop `prestodb`, but majority of the contributors (wighted by # commits) is active at `prestosql`.
To me, an open source project is more about people actually working on the project than the corporations.
However, devs from Internet-scale corporations are also involved in `prestosql`, contributing & collaborating as actively as never before.
From legal, corporate perspective, `prestosql` is a fork of `prestodb`.
From open-source, human perspective, facebook's prestodb is a fork.
Further reading:
Last, but not least, for many users stability, enterprise features & enterprise support is what is really important.
If you're looking for hardened, long-term supported, enterprise-ready Presto distribution, then look no further than
Best,
Piotr