| Domain analysis - | (Software Engineering) an object-oriented software engineering activity that attempts to identify classes that are relevant to an entire application domain, rather than a specific application |
| Effort - | (Software Engineering) the work-time product (e.g., person-days) associated with a project |
| Engineering change order (ECO) - | (Software Engineering) a mini-specification that describes the technical aspects of a change |
| Enhancement - | (Software Engineering) an extension of functional or performance requirements |
| Equivalence partitioning - | (Software Engineering) a black-box testing method |
| Errors - | (Software Engineering) a lack of conformance found before software is delivered to the customer |
| Estimation - | (Software Engineering) a project planning activity that attempts to project effort and cost for a software project |
| Extreme programming - | (Software Engineering) an agile process model that emphasizes scenario-based planning, incremental delivery, refactoring, pair programming and continuous testing. |
| Factoring - | (Software Engineering) a technique that distributes control and work in a top-down manner within a software architecture (used a part of structured analysis) |
| FAST - | (Software Engineering) Facilitated application specification techniques, a structured meeting between developer and customer; intent is to define basic requirementsFormal methods - |