EVOLUTIONARY ACQUISITION

Systems Engineering Glossary

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Information on Evolutionary Acquisition

Evolutionary acquisition is a system lifecycle model that allows a system to be developed when there is not a clear-cut definition of the user requirements. Evolutionary acquisition allows the reduction of the system lifecycle to speed up the Acquisition Phase, particularly for software-based projects. Evolutionary acquisition also allows the insertion of new technologies as they appear over time. For example, US Department of Defense (DoD) Directives 5000.1 and 5000.2 establish a preference for the use of evolutionary acquisition strategies utilising a spiral development process.
     Evolutionary acquisition is a strategy that defines, develops/acquires and fields a system increment of the system based on extant technologies, understanding of the problem space, operational environments, and so on. As these system conditions and constraints change over time, evolutionary acquisition allows subsequent increments to be developed to accommodate new technologies, changes in operational environment, and so on.


Other topics in our resources on Systems Engineering related to Evolutionary Acquisition include: 
 
  • Spiral Development Model
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  • Lifecycle Cost (LCC)

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