Gartner Research

Market Definitions and Methodology: IT Services

Published: 20 September 2016

ID: G00292743

Analyst(s): Christine Tenneson , Cathy Tornbohm , Fred Ng, Julie Short, Susan Tan , Dean Blackmore , Kathryn Hale, Helen Huntley


The research methodologies, segmentation, definitions and research metrics used for regularly published IT services regional and country-level market share and forecast statistics are detailed and updated in this report.

Table Of Contents

What You Need to Know



  • Market Share and Market Sizing Methodology
    • How Revenue Is Calculated for Each Vendor
    • How Market Share and Market Size Are Determined
  • Forecasting Methodology
    • Forecast Methodology Overview
    • Forecast Process
    • Forecast Assumptions


  • Forecast Currencies
  • Exchange Rates
  • Current-Dollar and Constant-Dollar Reporting
  • Market Statistics Publications
    • How to Use Market Statistics

High-Level Definitions and Segmentation

  • Business Services
    • Consulting
    • Implementation
    • IT Outsourcing
    • Business Process Outsourcing
  • Product Support
    • Custom Software Support
    • Hardware Support
  • Geographic Definitions
  • Vertical Market Definitions

Frequently Asked Questions

Gartner Recommended Reading

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