https://www.techradar.com/news/google-teams-up-with-paypal-making-it-easier-to-splash-out-on-apps

Google has teamed up with PayPal, making it easier to splash your cash on premium apps and services (like the new YouTube Music, for example).

It's been possible to flex your credit cards through Android Pay for a while now, but the PayPal collaboration means this will now be offered as a payment option as well.