The Shop, as it’s called, lets merchants display products directly on their company Page. Retailers can also choose whether they want customers to be able buy products directly on their Facebook Page or if they will be redirected to the company’s store or app after clicking the buy button.
Of course, there are Facebook Store apps already, but these don’t work on mobile devices and that’s how most people use Facebook these days. Existing Store apps just add a new tab to your page, while the new digital storefronts appear on the merchant’s main page, making it easier for people to see and subsequently use.