The Standard CMMI Appraisal Method for Process Improvement (SCAMPI) provides a well defined, publicly available set of methodologies for providing appraisals relative to Capability Maturity Model Integration (CMMI) models. It is applicable to a wide range of appraisal usage modes, including both internal process improvement and external capability determinations. With the publication of this handbook, the method is embodied in three standard variants based on the class structure defined in the Appraisal Requirements for CMMI (ARC V1.1). As a set, the SCAMPI methods provide a variety of solutions to accommodate the needs of appraisers who play a variety of different roles. The internal change agent, the professional consultant, and the external auditor all have needs that lead to specific sets of tailoring decisions in the use of process appraisals. Guidance for these needs is provided for each applicable process description. This document defines the boundaries of tailoring and provides guidance for the application of the SCAMPI B and SCAMPI C methods.