Gartner Research

Dataquest Guide: IT Services Market Research Methodology and Definitions

Published: 30 November 2009

ID: G00172270

Analyst(s): Jason Harris, Chiaki Morikawa, Fred Ng, Kathryn Hale


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
  • Market Statistics Publications
    • Historical Data in the Market Share and Forecast Databases
    • Where to Find Market Share and Forecast Databases
    • How to Use Market Share Statistics
  • Frequently Asked Questions
  • Market Share and Market Sizing Methodology
    • How Vendor Revenue Is Calculated
    • How Market Share and Market Size Are Determined
  • Forecasting Methodology Overview
    • Calculation of Historical Revenue
    • Forecast Dimensions and Data Model
    • Forecast Process
  • Forecast Assumptions
  • Exchange Rates
  • Forecast Currencies
  • Choosing the Appropriate Database Document
  • IT Services Segmentation
  • Service Line Segmentation
  • Platform Segmentation
  • Method-of-Purchase Segmentation
  • Outsourced Domain Segmentation
  • Vertical Segmentation
  • Geographic Segmentation
  • IT Services Detailed Definitions
    • Professional Services
    • Product Support Services
    • IT Services Platform Definitions
    • Method-of-Purchase Definitions
    • Vertical Market Definitions
    • Geographic Definitions

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