What can we use to measure non-functional requirements


by: Steve Kitchng

Most if not all CFPS (Certified Function Point Specialists) have encountered projects that sit outside the organizational norm with significant development requirements for non-functional work.

 Function points by their very name are focused on delivered functionality so do not provide for non-functional development.

 SNAP (Software Non-functional Assessment Process) has been developed to supplement the FP sizing methodology and provide a sizing technique for the non- functional component.

 This report considers the following:

  • When do I need to use a non-functional measure?

  • Where did SNAP come from?

  • What does it capture?

  • How do I implement it?

  • Do estimating products cover SNAP?

  • Can SNAP productivity be compared against the rest of the Industry?

  • Are there alternatives?

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