Next is the Validation and Construction phase. In this phase we determine whether we can actually achieve the desired outcome. This phase also covers the construction of the software application.

Just as the software development life cycle is iterative, so too is this part of the cycle. As we progress through the build, we build prototypes (or proof-of-concepts) if needed to ensure that a specific technology can be implemented the way we need it to be. In most cases, however, prototypes are not needed. Unit tests for a feature are created, and then we build the functionality for the feature. By verifying the tests we can determine that the feature is complete.

Prototype

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Create Unit Tests

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Build

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Verify Unit Tests

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