Gartner Research

Best Practices in Application Development Estimation

Published: 12 May 2009

ID: G00167615

Analyst(s): Matthew Hotle


The only truism about an estimate is that it's wrong. Ignoring this fact plunges the AD organization and its business partners into one of several "false" games. The "real" estimating game has four basic types that respect the estimation process as an allocation of capital to AD.

Table Of Contents
  • Overview
  • Playing the Estimating Game
    • The Initial Estimate Is the "Right" Estimate
    • We Can Negotiate Estimates
    • Anybody Can Do It With People
    • Estimates From Inaccurate Data Will Prove Accurate
  • The Real Game
    • Functional Estimates
    • Task- or Deliverable-Based Estimating
    • Experience-Based Estimating
  • Playing the Game Well
    • Use Multiple Techniques
    • Estimate Several Times During the Project
    • Use Already-Built Artifacts During the Delivery Process

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