This IDC Forecast Update is based on version 10.2 of IDC's Internet Commerce Market Model (ICMM), which provides data on Internet access devices, users, and buyers as well as consumer and commercial ecommerce for 2005 (actual) through 2009 (forecast). Additional information and analysis for IDC's ICMM version 10.2 are available through a full-featured database product covering six regions and 50 countries.

This document provides a revision of the forecast originally published in Worldwide Internet Usage and Commerce 2005-2009 Forecast: Internet Commerce Market Model Version 10.1, which forecasts the market for Internet usage and commerce on a global basis.