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Systems development life cycle
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==== Disposal ==== At end of life, plans are developed for discontinuing the system and transitioning to its replacement. Related information and infrastructure must be repurposed, archived, discarded, or destroyed, while appropriately protecting security.<ref>{{cite web |last=Radack |first=S. |date=n.d. |title=The system development life cycle (SDLC) |url=https://csrc.nist.rip/publications/nistbul/april2009_system-development-life-cycle.pdf |publisher=National Institute of Standards and Technology}}</ref> In the following diagram, these stages are divided into ten steps, from definition to creation and modification of IT work products:
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