It’s official — Facebook is launching a video chat service on the social network, powered by Skype.

The video chat application, which will be rolled out immediately to Facebook users, is simple to use, said CEO Mark Zuckerberg at a news conference at the company’s headquarters in Palo Alto, Calif.

All you have to do is click on a button within the already existing chat function, Zuckerberg said. And it doesn’t matter if you have the app or technology to launch a video chat — it will be automatically downloaded when you first initiate a call, he said.

Facebook is also improving some of its other services, announcing it will be setting up users with the ability to have ad hoc chats through the Group Function. Facebook will also be offering a new design for Chats

that will allow for a sidebar beside the Chat window so users can see more clearly who is and isn’t online.

Zuckerberg said he sees the trend of co-operation in the high-tech sector, such as the partnership between Skype and Facebook, growing.