This is one of the most common questions I get. Without a census of any type it is difficult to drill down to the right answer, as the numbers tend to be fluid.
Here is what we know today:
Using dozens of data sources, we can start from the top down and try to get into the right area code. The global IT industry is forecasted to be $3.828 trillion dollars (yes, with a "t") in 2015, according to Gartner Group.
North America represents about 25 percent of