HomeKit is just apples smart home platform. Requires either a HomePod or Apple TV to act as a central hub (or hubs) and then everything else attaches to that and shows up in the Apple home app.
That way you can just use (for the most part) the one app to control the entire smart home rather than individual apps.
As you can see, my downlights are switched off at the wall while I investigate the issues I’m having so show as unresponsive.
I also have all my cameras linked through (not shown)
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