SAP Supply Network Collaboration (SNC) is a component of SAP Supply Chain Management (SAP SCM). It was formerly known as SAP Inventory Collaboration Hub (SAP ICH). Because enhancements broadened the collaboration environment, the product was renamed to reflect its extended capabilities for collaboration with suppliers (extending beyond inventory collaboration).
Note that the following ES bundles can use SAP ICH 5.0 instead of SNC 5.1:
while the Outsourced Manufacturing ES bundle requires SAP SNC 5.1.