Foster City is a master-planned city located in San Mateo County, California, United States. Foster City is sometimes considered to be part of Silicon Valley for its local industry and its proximity to Silicon Valley cities. There are many notable companies headquartered in Foster City like Gilead Sciences, Zoox, Sledgehammer Games, and Replit. Visa used to be headquartered in Foster City.

Peter Andreas Thiel is an American entrepreneur, venture capitalist, and political activist. A co-founder of PayPal, Palantir Technologies, and Founders Fund, he was the first outside investor in Facebook. As of June 2023, Thiel had an estimated net worth of $9.7 billion and was ranked 213th on the Bloomberg Billionaires Index.