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The Keyword

The meaning of I/O: How Google's annual event got its name

An illustration of a giant blue “I slash O” floating on top of clouds against a blue sky background.

Google I/O is our biggest event of the year. But where did the name originate?

A definition card with the words “Google I/O” with a pronunciation guide under it that reads “goo-gle ai-oh, noun.” There is a black line and underneath that a definition reading: “Google I/O is our annual developer conference held each spring, where we reveal the latest news and updates on our platforms, products, and future innovations.

The current Google I/O logo, which debuted in 2013.

A logo that reads “Google I/O” and the I slash O are bold and blue.

The original I/O logo from 2008, with the connector-style design hinting at the “input/output” concept.

A black rectangular icon with rounded edges. Inside the icon is the word “Google” in yellow. In larger text is a white “I” and on the other half of the black rectangle a large white “O.”

An (abbreviated) googol: the first two digits gave I/O its name.

A row of numbers. A “10” in blue followed by three zeroes in black and then an ellipses followed by six more zeros in black.

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