Stripe leads $20M Series A into Fast, which is building a universal checkout service for e-commerce

Early this morning, Fast, a startup building platform-agnostic login and checkout services, announced that Stripe has led a $20 million investment into its business. Prior investors Index Ventures and Susa Ventures took part in the round. Susa previously participated in the company’s late-2019 round that Index led.
Coming in late March, the new capital is a quick-follow to Fast’s November seed round. Such a rapid-fire deal would have felt right at home in mid-2019; to see two consecu