Vanced microG is an app installed with other apps like Vanced or Vanced Music. This app consists of modified Google Mobile Services (GMS) so that Vanced can work properly with your Google account. Using the app, you can sync your account with the modified app and save information such as history, subscriptions, or where you stopped watching a video.
As the name suggests, Vanced microG is based on the microG project. This project consists of re-implementing Google Play Services without Google present. This means you can use apps that require Google services on devices that don't normally support them.
You can modify several parameters from the app settings, such as choosing which Google account you want to use, deciding whether you want to enable Google device recording, or disabling the double-cast icon that may appear accidentally.
If you want to enjoy Vanced on your smartphone or tablet and don't have a rooted device, then downloading Vanced microG APK is a must. If your device is rooted, you do not need to install microG for Vanced to work.