After 27 years, Jeff Dean is leaving Google: His 'goodbye email' explains why

WIRE — Jeff Dean is leaving Google after 27 years, closing a run that took him from employee number 30 to chief scientist. He built MapReduce and BigTable, started the TPU program, founded Google Brain and co-led Gemini. Now he's CEO of Discovery Loop, chasing AI that improves itself. His farewell note lists it all, plus 18 office moves and Monterey bike rides.

"We aggregate wires to encourage regional discovery, sending readers directly back to the original source to explore full coverage."

This is a normalized overview of the breaking feed event. The complete, official release detailing all points, background context, and statements remains hosted by the original publisher.