Support for APK expansion files (OBB) - Unity Manual

APK expansion files are used as a solution for the 100MB app size limit in the Google Play Store. If your app is larger than 100MB (which is quite likely for a big game), you have to split your output package into the main part (APK) and the expansion file (OBB). Refer to the Android Developer documentation on expansion files for more information.

Unity - Manual: Inside the Android Build Process

Native (C++) plug-ins for Android - Unity Manual

android - Selecting/Uploading Obb file in new Developer Console

unity - Uploading APK build to Google Play Console error You

Simple Tutorial for Winlator ( new windows emulator) : r

Publish an APK with OBB in Unity

WebGL: Deploying compressed builds - Unity Manual

Separating Unity project into APK and OBB(data file) for Uploading

Play Store app size. Guidelines relating to the size of apps…

Publish an APK with OBB in Unity

Unity - Manual: Unity Asset Bundle Browser tool

PC, Mac & Linux Standalone build settings - Unity Manual

APK Expansion Files

Android App Bundle (AAB) Replaces APK in Google Play Store – Shoutem