Originally Posted by
TyrannicalDuncery
Thank you! This is the clearest concise explanation I've heard.
Google Pay India sounds bomb, it has some kind of bill pay too, right? Hit it while you can, friends!
The actual mechanics of it all are in Google Play Services (paired closely with the operating system) so the Google Wallet and Google Pay apps were always just user interfaces on top of that. That's why you could have both installed at the same time before the Google Pay app was killed off.
You can actually store cards and pay without either app installed by using the notification shade shortcuts that take you to the underlying bits.