With this feature, people on desktop or mobile can click the buy call-to-action button on ads, and posts, to purchase a product directly from a business, without leaving Facebook, the post reads.
In an image of what this feature looks like, a buy button sits in the bottom right corner of the ads that users normally see as they scroll through their Facebook news feeds.
This feature is currently in its test phase, so it is being used only for a few small and mid-size businesses in the US.
The buy option will be available for specific products on Facebooks site and mobile application starting Thursday.
The announcement came on Thursday, on the companys Facebook for Business blog, a resource for businesses that use Facebook to market their products. Facebook has previously tried to enable purchasing on its site, but with little success, reports say.
Facebook Credits, for example, were a virtual currency that allowed users to make purchases within games, $1 was equal to 10 Facebook Credits.
While this feature was disbanded in 2012, it has since been replaced by Facebook Game Cards that let users buy items in their favorite games and apps.
Facebook had said earlier this year that it would avoid a direct purchasing feature on its news feed.
But Facebook is now feeling the pressure to compete with sites like Twitter, which recently released a buy now button that lets users buy items directly from paid-for tweets and the online mega-giant Amazon, which packs its devices with features that take the users directly into the Amazon Store, compelling them to make purchases in the moment.