Samsung Foundry provides a shuttle service to help its customers economically characterize their designs

MPW (Multi Project Wafer)

Multiple ICs from different customers and/or projects are combined into one single wafer, and one mask contains the same layer of two or more different circuits. This allows the cost to be shared among several customers as well as the functional validation and process compatibility of a variety of IP blocks.
SAMSUNG has shortened the MPW turnaround time for customer benefit, and supports module protection for different projects.

Growing List of Third-party DFM Tools
Advantage Lowest cost, recommended for IP verification
Check point Schedule limitation, acquisition module count
Mask Low price, but change MP in all cases

Samsung Semiconductor Service Mask Service