13.2 Personal Software ProcessSM

12.4 CMMI ROI% Methodology

The ROI% methodology for Capability Maturity Model Integration is a procedure to measure, quantify, and analyze the money returned. The ratio of net benefits to costs for Capability Maturity Model Integration is high due to software maintenance cost savings. ROI% is the money earned from using Capability Maturity Model Integration to create a new and improved software process. Its ROI% methodology is a two-part process that consists of estimating the B/CR using net benefits versus gross benefits. Its benefit methodology consists of combining the net or adjusted benefits together with the special costs using the B/CR formula. Key elements include subtracting the special costs from the gross benefits to form net benefits. These are used to form a better picture of the magnitude of the benefits to the costs for Capability Maturity Model Integration . (B/CR and ROI% are similar in that they are used to compare benefits to costs. However, B/CR uses gross benefits, while ROI% uses net benefits. Net benefits do not contain the implementation costs. Therefore, ROI% lowers the magnitude of benefits to costs versus using B/CR.) Figure 64 illustrates the ROI% methodology for Capability Maturity Model Integration .

Figure 64: ROI% Methodology for Capability Maturity Model Integration

Estimate adjusted benefits for CMMI : The objective of this activity is to validate the benefits of CMMI by removing its costs. This substep includes: subtract special costs from benefits for CMMI .

Estimate adjusted B/CR for CMMI : The objective of this activity is to measure the magnitude of the net benefits to the costs for implementing CMMI . This substep includes: divide adjusted benefits by special costs for CMMI .