Gartner Research

Iterative SDLC Methodologies: Spiraling into Control or Running in Circles?

Published: 14 November 2006

ID: G00203230

Analyst(s): Chris Howard

Summary

Iterative software development lifecycle (SDLC) methodologies emerged as an alternative to waterfall to help teams build better software. Promise-laden at first, many iterative SDLC implementations become bloated and mired in a tangle of artifacts. Even worse, iterative methodologies are often performed in waterfall fashion--old habits are hard to break. In this Application Platform Strategies overview, Analyst Chris Howard examines the benefits and hazards of popular iterative SDLC methodologies, and introduces thinner methodologies that are gaining traction.

Table Of Contents

Synopsis

Analysis

  • Iterative Methodologies Chart a New Course
    • Surviving the Falls
    • Obstacles Appear
    • Navigating the Rapids: Prescription vs. Instinct
  • Inheriting the Sins of the Father
    • Artifact Obsession
    • Who Am I, Anyway?
    • Passive-Aggressive Project Plans
    • Big Funding Up Front
    • Asking for a Date
    • What? Me Waterfall?
  • Emptying the Nest: Rejuvenation and Revitalization
  • Adolescent Rebellion
  • Recommendations
    • Adopt a Risk-Management-Oriented Funding Model
    • Keep Project Types and Best Practices in Synch
    • Focus on Essential SDLC Deliverables
    • Favor Accuracy over Precision
    • Keep Iterations Short
    • Ensure Consistent Usage
    • Perform Reviews

The Details

  • Iterative Fundamentals
    • The Unified Process
    • The Basic Idea
    • Waterfall Shape, Iterations Within
  • Artifacts
    • Generic Artifacts
    • UML Artifacts
  • Use Cases
    • Define and Refine
    • Organize and Prioritize
    • Realize
    • Validate and Trace
    • Artifacts and Reviews
  • Post-Iterative Methodologies

Conclusion

Notes

Related Research and Recommended Reading

©2019 Gartner, Inc. and/or its affiliates. All rights reserved. Gartner is a registered trademark of Gartner, Inc. and its affiliates. This publication may not be reproduced or distributed in any form without Gartner’s prior written permission. It consists of the opinions of Gartner’s research organization, which should not be construed as statements of fact. While the information contained in this publication has been obtained from sources believed to be reliable, Gartner disclaims all warranties as to the accuracy, completeness or adequacy of such information. Although Gartner research may address legal and financial issues, Gartner does not provide legal or investment advice and its research should not be construed or used as such. Your access and use of this publication are governed by Gartner’s Usage Policy. Gartner prides itself on its reputation for independence and objectivity. Its research is produced independently by its research organization without input or influence from any third party. For further information, see Guiding Principles on Independence and Objectivity.

Already have a Gartner Account?

Become a client