The terms AOSP and AAOS are both related to the Android ecosystem, but they serve different purposes. Here's a breakdown of the difference between AOSP and AAOS, and how each is used in Android:

1. AOSP (Android Open Source Project)

What it is:

• AOSP is the base open-source code of Android, maintained by Google.

• It includes the operating system, middleware, libraries, and core apps (like a basic dialer, SMS, etc.).

Purpose:

• To provide a free and open software stack that can be used by device manufacturers to build their own Android-based systems.

Usage:

• Used by OEMs (e.g., Samsung, Xiaomi, OnePlus) to create customized versions of Android.

• Provides the foundation for all Android-based platforms (including AAOS, Android TV, Wear OS, etc.).

• Developers can build custom ROMs or Android-based OS from AOSP (e.g., LineageOS).

2. AAOS (Android Automotive OS)

What it is:

• AAOS is a customized version of AOSP, specifically designed for in-vehicle infotainment systems.

• It is a variant of Android that runs directly on a car’s hardware, without needing a smartphone.

Purpose:

• To provide a native operating system for cars, allowing manufacturers to use Android to power their infotainment systems.

• Supports features like media playback, navigation, car settings, voice assistant, etc.

Usage:

• Used by car manufacturers (e.g., Volvo, GM, Ford) to build infotainment systems.

• Google provides Google Automotive Services (GAS) optionally, which includes Google Maps, Assistant, and Play Store.

• Supports third-party apps specifically designed for the car (e.g., music, navigation).

Key Differences