either on a merchants own domain or through headless checkout on any other website. Fast invests heavily in its user privacy and security, with a Zero Fraud Guarantee on chargebacks for sellers. Headquartered in San Francisco, Fast is a privately held company founded by Domm Holland and Allison Barr Allen and funded by Stripe, Addition, Index Ventures, Susa Ventures and Sugar Capital. Headquartered in San Francisco, Fast is a privately held company funded by Stripe, Index Ventures, Susa Ventures, Global Founders Capital, and Brian Sugar – who also serves on the board.