Google owns the Android mobile operating system and is a major subsidiary of Alphabet.
Android is a mobile operating system built on a modified Linux kernel and other open-source software. Google acquired Android Inc. in 2005, helping develop the platform into a global system for smartphones, tablets, televisions, cars, and other devices.
The first commercial Android phone, the HTC Dream, went on sale in 2008. Android is distributed through a broad device ecosystem, although manufacturers may add their own interfaces and services. Google also supplies the Google Play store and Google Mobile Services on many certified devices.
Alphabet is the publicly traded parent company, while Google is the operating company most associated with Android. This distinction is important when comparing company names in market-cap lists.