The IPC Pricing Engine is used in several products of the SAP Business Suite (e.g. CRM) for price determination and calculation (e.g. CRM Sales Order or SRM Purchase Order).
Now for the IPC Pricing Engine a new remote API is provided for integration purpose. This API allows you to call the IPC pricing feature of a SAP system from an external application (e.g. 3rd party web shop). The complete documentation of this new Stateless Pricing API, including a full source code example, is available in the SAP note 1849765.