Facebook on Tuesday said that advertisements will begin appearing up on Messenger home screens globally after tests with users in Australia and Thailand.

"Messenger ads are going global," the Facebook-owned mobile messaging service said in a blog post. "People will see Messenger ads in the home tab of their Messenger mobile app."

Facebook enticed businesses to take advantage of a new tool for creating ads for Messenger, which it said is used by more than 1.2 billion people monthly.

The move promised Facebook an even larger bite of the digital advertising revenue pie.

Facebook revenue growth was expected to throttle back "significantly" this year as the social network runs out of room to post ads, chief financial officer David Wehner said during an earnings call with analysts.

The world's biggest social network has been working to diversify its revenue base as it expands into new areas. However, advertising still accounts for the vast majority of revenues, with most of that money made from people connecting to the social network on smartphones or tablets.