In Siebel eSales, the Shopping Cart and order management use workflows for various actions, such as checking out, editing quotes, modifying orders, and so on.

The Shopping Service business service provides methods that can be invoked in the workflows. In addition, in Siebel 7 the Add to Cart feature has been moved from the Quote business component to the Shopping Service business service. This is because business services can be accessed more universally than business components.

Therefore, the Shopping Service can support other features such as Add to Favorites, Quick Add, and Save Cart As Template. It is also easier for other applications such as Siebel eAuction, Siebel eTraining, and Siebel Partner Relationship Management to integrate with Siebel eSales order management.

The Shopping Service business service is a collection of methods, written in C++, that fall into one of three categories:

• Methods used in user actions, such as Add To Cart.
• Methods used in workflows, such as eSales - Checkout Process.
• Methods used as integration APIs for other applications, such as Siebel eAuction.