Android needs to be lightweight so that low-end mobile devices will be able to run it smoothly, but even Android is too intensive for the kind of minimal hardware that’s being used to power Internet of Things devices while still keeping them affordable. To fix this, the company has essentially taken Android and “polished it down” to the bone so that even the weakest hardware can run it. This polished down operating system is known as Brillo, and it’s going to be the platform that brings Google into the smart home.