Why did @JeffDean leave Google after 27 years? Here's the answer in his own words! “Sometimes being a focused small company, with everyone focused on exactly that mission… can be amazing,” he said this at the AASF 2026 conference at Stanford. Jeff had watched Google grow from 25 people to more than 190,000. Now, with his new venture @DiscoLoopAI, he is returning to something much smaller: a focused group of people united around one ambitious mission—to use AI to accelerate scientific and engineering discovery. Perhaps he is just searching for the feeling of early Google again: a small team, a huge vision, and brilliant people all pulling in the same direction. Large companies have resources, but small teams have dreams and focus. Best of luck, Jeff! You'll always have our support! 😊