4.5.3  The Software Assurance and Software Safety Standard establishes a baseline set of requirements for software assurance, software safety, and IV&V to reduce risks on NASA projects and programs. Each project has unique circumstances, and tailoring can modify the requirements set for software assurance, software safety, and IV&V effort. Determining the tailoring of requirements is a joint software engineering effort and SMA effort, including acceptable technical and programmatic risk posture, Agency priorities, size, and complexity. Requirements can be tailored more broadly across a group of similar projects, programs, organizations, or other collections of similar software development efforts.