| Risk analysis - | (Software Engineering) a techniques for identifying and evaluating risks |
| Risk Management and Monitoring Plan (RMMP) - | (Software Engineering) a plan for mitigating, monitoring and managing risks |
| Scheduling - | (Software Engineering) the activity that lays out a timeline for work to be conducted on a project |
| Scope - | (Software Engineering) a bounded statement of what must be accomplished |
| Security - | (Software Engineering) the ability of software to operate in a manner that is secure from internal or external attack |
| Security testing - | (Software Engineering) testing tasks that probe the vulnerability of both client-side and server-side software |
| Selective testing - | (Software Engineering) testing only a selected set of program paths and data inputs |
| Side effects - | (Software Engineering) errors that occur because of changes |
| Six sigma - | (Software Engineering) a widely used strategy for statistical quality assurance |
| Smoke testing - | (Software Engineering) an integration testing approach that constructs and tests software on a daily basis |