OWASP Software Assurance Maturity Model

Governance
Governance focuses on the processes and activities related to how an organization manages overall software development activities. More specifically, this includes concerns that impact cross-functional groups involved in development, as well as business processes established at the organization level.

Strategy and Metrics
Software assurance entails many different activities and concerns. Without an overall plan, you might be spending a lot of effort to build in security, while in fact your efforts may be unaligned, disproportional or even counterproductive. The goal of the Strategy and Metrics (SM) practice is to build an efficient and effective plan for realizing your software security objectives within your organization.
A software security program, that selects and prioritizes activities of the rest of the model, serves as the foundation for your efforts. The practice works on building the plan, maintaining and disseminating it.
At the same time, you want to keep track of your security posture and program improvements. A metrics-driven approach is included to ensure an accurate view on your activities. To measure is to know.