Gapps |link| Official
MicroG is an open-source implementation of Google Play Services. It acts as a "shim," tricking apps into thinking Google Play Services is installed, but it routes the data elsewhere or keeps it local.
Whether a user chooses a massive "Stock" package to replicate a Pixel phone, a "Nano" package for efficiency, or the privacy-focused MicroG alternative, understanding GApps is a fundamental step in mastering the Android operating system beyond the factory settings. MicroG is an open-source implementation of Google Play