Siebel Order Management Guide > Product Data Service and Import/Export API Reference >
About the Product Data Service API
The Product Data Service API allows you to use the catalog, product selection, and product search capabilities of the Siebel Business Application without using the Siebel CRM user interface.
These APIs give you complete flexibility to build the user interface. You can use your own tool to design the user interface. Your user interface is completely independent of the Siebel user interface, but you can use these APIs to call all the functionality that the Siebel Business Application uses to work with products, including eligibility, compatibility, and catalog search.