Facebook is currently testing a “Buy” option that allows users on desktop or mobile to click a “Buy” button on ads and Page posts in order to purchase a product directly from a business, without leaving Facebook.

For now, the test is limited to a few small and medium-sized businesses in the U.S., and the social network will not be charging those businesses to use the feature. But a Facebook spokesperson told TechCrunch that Facebook “was not disqualifying that option” in the future.

Facebook, and its advertisers, hope that by enabling users to complete their entire purchase within Facebook, the Buy button will boost boost ad conversion rates, which have been declining steadily according to Forbes. The service will let people use a credit card already on file with Facebook, enter new payment details and save them for future use, or checkout and not store payment info at all. Storing all this payment information with the social network understandably may raise some privacy concerns with users, and the social network is taking steps to assuage them.

“We’ve built this feature with privacy in mind, and have taken steps to help make the payment experience safe and secure,” Facebook announced in a blog post. “None of the credit or debit card information people share with Facebook when completing a transaction will be shared with other advertisers, and people can select whether or not they’d like to save payment information for future purchases.”

This initial move into the online retailer arena could certainly be viewed as an attempt to challenge the online retail giant, Amazon. Facebook’s end goal seems to be the creation of a community where users can accomplish any task they want to on the web, without ever leaving the comfort of the social network. And to accomplish this goal, Facebook has not been shy about challenging established titans. Facebook already has its own chat and email service, and in the past few months Facebook announced Facebook Audio ID to compete in the music subscription service market.