The Supply Chain Operations Reference Model (SCOR) is a model developed by the Supply Chain Council to give industry leaders predefined best practices and metrics for each type of supply chain. The model evaluates the supply chain for effectiveness and efficiency of sales and operational planning (S&OP). SCM (Supply Chain Management) is complex, and S&OP implementation can be difficult, but the SCOR model is intended to help standardize the process and create a measurable way to track results.