1# Subsystem Development Guidelines<a name="EN-US_TOPIC_0000001111199452"></a> 2 3- **[Compilation and Building](subsys-build.md)** 4 5- **[Distributed Remote Startup](subsys-remote-start.md)** 6 7- **[Graphics](subsys-graphics.md)** 8 9- **[Multimedia](subsys-multimedia.md)** 10 11- **[Utils](subsys-utils.md)** 12 13- **[AI Framework](subsys-aiframework.md)** 14 15- **[Sensors](subsys-densor.md)** 16 17- **[Application Framework](subsys-application-framework.md)** 18 19- **[OTA Upgrade](subsys-ota-guide.md)** 20 21- **[Security](subsys-security.md)** 22 23- **[Startup](subsys-boot.md)** 24 25- **[Testing](subsys-testguide-test.md)** 26 27- **[DFX](subsys-dfx.md)** 28 29- **[R&D Tools](subsys-toolchain.md)** 30 31- **[XTS](subsys-xts-guide.md)** 32 33 34