Twilio 

Twilio Inc., together with its subsidiaries, provides a cloud communications platform that enables developers to build, scale, and operate customer engagement within software applications in the United States and internationally. Its customer engagement platform provides a set of application programming interfaces that handle the higher-level communication logic needed for nearly every type of customer engagement, as well as enable developers to embed voice, messaging, video, and email capabilities into their applications. The company was incorporated in 2008 and is headquartered in San Francisco, California.