What Is Incremental Development Model?

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What Is Incremental Development Model?
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According to incremental model, the product
creation process is divided into diverse builds.
Thus, development cycle reminds multistage
model. Each cycle is divided into smaller stages,
and management and work monitoring process become
easier.
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Each such module passes the set of certain
phases requirements, designing, realization,
and testing. The release version of the software
product will be available right on the first
module. The new functions are added to the
release version of the product with each release.
The process will continue until the system
development is fully completed.
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The team creates the product gradually,
step-by-step, and at each step a certain type of
checking is executed (integration testing, system
testing, functional testing, unit
checking, acceptance testing, retesting,
and regression testing, and so on).
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• What are the pluses of incremental model?
• Quick generation of the working software.
• The model is rather agile - the changes during
  designing the requirements and scopes of work
  will not cause heavy expenses.
• The user reaction may be checked and achieved at
  each of the builds.
• Risks reduction. The areas with high risk for
  each working cycle may be easily detected and
  solved.

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• Among minuses of the development with using
  incremental model, the following ones may be
  specified
• the process performance depends on planning and
  designing level
• the full and accurate defining of all system is
  required before it will be divided and
  incrementally created
• the total cost of the development process will be
  higher, in comparison with the waterfall model.

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