Gartner Inc., a leading worldwide information technology research and advisory firm, forecasts that the market for cloud services will grow to $150.1 billion by 2013, from an estimated $46.4 billion today. (in Verizon Business PR) Gartner, Inc., "Forecast: Sizing Cloud; Understanding the Opportunities in Cloud Services," March 18, 2009; Authors: B. Pring, R. H. Brown, A. Frank, S. Hayward, L. Leong, ID Number G00166525.