Facebook announced an alliance with Uber that lets people summon cars from the ride sharing service using the Messenger smartphone application, AFP reports.

The partnership was a major move for both California firms, further expanding Facebook's stand-alone messaging service beyond simply communicating and putting Uber in a social network-backed application with some 700 million users.

"With this new feature, you can request a ride from a car service without ever needing to download an extra app or leave a conversation," product manager Seth Rosenberg said in a blog post.