Cami is the marketer for ScaryBooks.com. Google flow reports show that a high percentage of users get to checkout and abandon purchases. Cami believes the reason is that the checkout process requires users to fill in all delivery, billing and credit card information on each purchase. Which Google solution can help to make checkout much faster for ScaryBooks.com?

One Tap sign-up allows users to create an account or sign in with a single tap, leveraging their existing Google account information. This significantly streamlines the checkout process by pre-filling necessary details like name, email, and potentially shipping addresses, reducing friction and abandonment. Google App Engine is a platform for building and hosting web applications, not a direct solution for checkout flow optimization. Progressive web apps (PWAs) offer app-like experiences through web browsers but don't inherently simplify the data entry aspect of checkout. Google AI encompasses various artificial intelligence technologies and is too broad to be a specific solution for this problem.