The motivation for a review is that it is impossible to test all software. Clearly, exhaustive testing of code is impractical. Technology also does not exist for testing a specification or high-level design. The idea of testing a software test plan is also bewildering. Testing also does not address quality issues or adherence to standards, which are possible with review processes.
There are a variety of software technical reviews available for a project, depending on the type of software product and the standards that affect the review processes. The types of reviews depend on the deliverables to be produced. For example, for a Department of Defense contract, there are certain stringent standards for reviews that must be followed. These requirements may not be required for in-house application development.
A review increases the quality of the software product, reduces rework and ambiguous efforts, reduces testing, and defines test parameters, and is a repeatable and predictable process. It is an effective method for finding defects and discrepancies; it increases the reliability of the delivered product, has a positive impact on the schedule, and reduces development costs.
Early detection of errors reduces rework at later development stages, clarifies requirements and design, and identifies interfaces. It reduces the number of failures during testing, reduces the number of retests, identifies requirements testability, and helps identify missing or ambiguous requirements.
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