Google I/O

Google I/O
Google I/O
Date(s)	May–June (1–3 days)
Frequency	Annual
Venue	2008–15: Moscone Center; 2016–19: Shoreline Amphitheatre; 2021: Online; 2022– : Shoreline Amphitheatre, Online;
Location(s)	2008–15: San Francisco, CA; 2016–19: Mountain View, CA; 2021: Online; 2022–: Mountain View, CA, Online;
Founded	May 28, 2008
Most recent	May 20, 2025
Attendance	5000 (est.)
Organized by	Google
Website	io.google

Google I/O, or simply I/O, is an annual developer conference held by Google in Mountain View, California. The name "I/O" is taken from the number googol, with the "I" representing the first digit "1" in a googol and the "O" representing the second digit "0" in the number. The format of the event is similar to Google Developer Day.