Hybrid Specification Management
Specification Management supports collaboration based on specification data in a hybrid environment with SAP S/4HANA Cloud Private Edition and SAP Integrated Product Development. With the help of this functionality, you can load and transfer specification values between SAP S/4HANA and SAP Integrated Product Development for collaboration.
The following video explains the scenario and how it can be leveraged:
One of the key use cases is when a product developer wants to collaborate with suppliers on specifications but still keep their specification database in the SAP S/4HANA system. The following image explains how data starts from and remains in the system during hybrid specification management:

Your administrator needs to perform configuration steps to enable the hybrid scenario, see Integrating with SAP S/4HANA Specification Management.
For the scope and limitations of this functionality, see Limitations for the Hybrid Scenario.