of libraries can be defined as into two group of libraries such as compatibility and component libraries. implementation 'com.android.support:design:28.0.0' This is the stable release of Support Library 28.0.0 and is suitable for use in production. This will be the last feature release under the android.support packaging, and developers are encouraged to migrate to AndroidX. implementation 'com.google.android.material:material:1.0.0