Android Libraries and Android Archives (AAR) are plug-inA set of code created outside of Unity that creates functionality in Unity. There are two kinds of plug-ins you can use in Unity: Managed plug-ins (managed .NET assemblies created with tools like Visual Studio) and Native plug-ins (platform-specific native code libraries). More info
See in Glossary types that can contain C++ and Java code, resources such as assets, and a plug-in manifest file. You can use them to reuse components across multiple applications, or build variations of one application with the same core components.
|Introducing Android Library Projects and Android Archive plug-ins||Understand Android Library Projects and Android Archives.|
|Import an Android Library Project||Import an Android Library Project into your Unity Project.|
|Import an Android Archive plug-in||Import an Android Archive into your Unity Project.|