System integration is about making life easier. Each individual subsystem in your home - lighting, security, audio, video, HVAC, lawn sprinklers - and have them controlled by one main system. This main system allows the convenient and easy management and access of all your subsystems through from in-wall touchscreens, wireless touchscreens, remotes, computer, by internet, by phone, and with PDA software for both Windows Mobile and Apple.

Some manufactures of system integration products include Crestron, AMX, ELAN, Homelogics, Control4, and HAI.