| Software process improvement (SPI) - | (Software Engineering) a set of software engineering activities that attempt to improve the state of software engineering practice within an organization |
| Software quality assurance (SQA) - | (Software Engineering) a series of activities that assist an organization in producing high quality software |
| Software Requirements Specification - | (Software Engineering) a deliverable that describes all data, functional and behavioral requirements, all constraints, and all validation requirements for software |
| Software safety - | (Software Engineering) an SQA activity that focuses on the identification and assessment of potential hazard that may have a negative impact on the operation of software |
| Software testing - | (Software Engineering) a set of activities conducted with the intent of finding errors in software |
| Spiral model - | (Software Engineering) an evolutionary software engineering paradigm |
| Stakeholders - | (Software Engineering) any person of group that has a stake in the successful completion of a software project |
| State transition diagram (STD) - | (Software Engineering) a notation for behavioral modeling |
| Statistical quality assurance - | (Software Engineering) techniques for process improvement that are based on measurements of the product and the process |
| Stepwise refinement - | (Software Engineering) a technique for accomplishing functional decomposition or procedural design (also called partitioning) |