Custom vs. COTS: Tailor Requirements Gathering for a Tighter Fit

Author(s): Gareth Doherty

Executive Summary

Choosing the right requirements gathering strategy is essential for keeping software procurement or development projects on target and within scope. Development and acquisition projects demand a distinct approach when it comes to requirements. This note provides a better understanding of the requirements process with respect to the following topics:

  • Software development methodology.
  • Formal versus informal procurement strategies.
  • Acquiring new business processes versus supporting an existing business process.

Before the start of the next custom build or vendor selection, make sure the project team has a clear understanding of requirements.