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The lifecycle of a comptuer system can be split into 6 phases

The lifecycle of a comptuer system can be split into 6 phases:

  • Cross Phase Activities
  • Planning and requirements
  • Design, Code and Build
  • Pre-Installation (Including FAT)
  • Installation Phase
  • Use Phase
  • Decommissioning Phase

Have I left any out?

What do you mean by cross phase activities?

    Document Management
    Change Control
    Incident Management
    Requirements Traceability

According to your definition of cross phase activities, it’s not a “phase” - those activities occur across the entire life of the product.

What about the finger-pointing phase? :wink:

Personally, I wouldn’t split out the “Pre Installation” or the “Installation” phases you have listed. To me, you go from development to deployment. Part of development is ensuring it’s ready for deployment. I would consider the “Use” phase to be the “Maintenance / Improvement” phase. That helps tie in the cross phase activities (global processes).