To add the Wix eCommerce platform’s functionality to a site, you need to install it as an app. However, unlike other Wix Apps, you can’t install the eCommerce platform independently. Instead, the Wix eCommerce app is added automatically as a dependency when installing a business solution app that relies on its functionalities, such as Wix Bookings, Wix Stores, or Wix Restaurants Orders.
The following articles explain how developers building different types of products should handle installation of the eCommerce app: