HomeKit is Apple’s answer to making your home smarter and more connected. It’s one of a number of standards, like Google’s Works with Nest and Project Brillo, aiming to take command of all your smart devices under a single, unified system.
Specifically, HomeKit is the name of the development system and standards that product and app developers must follow to be compatible with Apple products.
It’s similar in principle to HealthKit in that data measured by HomeKit devices will be shareable with other devices, and any product that supports it should work seamlessly with other Apple products.
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