Hi. When wanting to gave players the option to save game data to the cloud, is it advised to have them create an account with
a) Facebook
b) Google Play Games (and whatever the Apple equivalent is)
or
c) Playfab? (which is what I am using, or some other backend)?
I am trying to add IAP to my game, and I need to have a backend for that obviously. But I realized that it would be wise to also allow players to create an account so their data is stored on the cloud (and they can resume it even with a different phone).