Users will have multiple Google payment options at their fingertips, like a credit or a debit card previously saved via Android Pay, a payment card used to transact on the Play Store or a form of payment stored via Chrome. And they’ll be able to use these saved payment options in third-party apps and mobile sites, as well as on Google Assistant when they are on-the-go.

Paying with Google for Panera Bread on Google Assistant
For users, this means faster checkout. Now they’ll never miss a deal because they’re stuck on a bus and don’t want to pull out their credit card in front of strangers. They'll no longer experience the pain of stumbling on a sale that ends at midnight when they’re tucked in bed with their credit card out of reach. Users can save time and headache by using credit and debit cards they’ve already saved to their Google Account whenever they see the option to pay with Google on supported apps or sites. For developers, this API is a significant innovation that can enable faster checkout, drive more conversions, increase sales and reduce abandoned carts—all with a simple integration.