Gartner Research

Estimating the Time and Cost of ERP Implementation Projects Is a 10-Step Process

Published: 27 April 2006

ID: G00139720

Analyst(s): Pat Phelan


Many critical time and cost areas associated with implementation activities are often overlooked in estimation efforts. Use Gartner's 10-step process to produce a reliable estimate of the costs and duration of implementation projects for ERP.

Table Of Contents
  • Define the Scope of the Project
    • Typical Macroprocesses Identified as Part of an ERP Implementation
    • Sample Process Decomposition
  • Estimate Staffing to Lead the Project and Support Each Process Area
  • Estimate Custom and Interface Development Efforts
    • Custom Development
    • Interface Development
  • Assess Data Conversion Magnitude
    • Code Tables
    • Master Data Tables
    • Transaction Tables
    • Balance Tables
  • Estimate Project Duration
    • Project Planning and Preparation
    • Phase 1: Standard Solution Design
    • Phase 2: Standard Solution Development
    • Phase 3: Pilot Deployment
    • Phase 4: Rollout
    • Project Management
    • Organizational Change Management
  • Assess External Connectivity Requirements
  • Estimate Supplemental Staffing
    • Staffing for Custom Development
    • Supplemental Staffing for Data Conversion
    • Staffing for User Training
  • Create a Time-Phased, Resource-Loaded Project Plan
  • Estimate Resource Rates and Apply Them to the Plan
  • Estimate Travel, Contingency and Final Project Costs
  • Conclusion

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