===== Waterfall Model =====
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The **Waterfall Model** is a sequential software development process model that follows the following defined phases:

  - Conception
  - Initiation
  - Analysis
  - Design
  - Construction
  - Testing
  - Production/Implementation
  - Maintenance

Using the software development life cycle's (SDLC) common steps, the waterfall model enforces moving to the next phase only after completion of the previous phase. Returning to a previous phase is frowned upon unless there is a clear need to do so.


Source: [[https://www.techopedia.com/definition/14025/waterfall-model | Waterfall Model ]]