Facebook just announced an integrated shopping experience that spans their Facebook and Instagram platforms. This is a free option for anyone with a Business Page on either service. Some of the key features include, Live shopping, loyalty programs, and integration with stories and ads. Customers can place an order either from the business’ website or directly from the app, if the user has enabled the checkout feature.
https://about.fb.com/news/2020/05/introducing-facebook-shops/