Does an organization have to be a certain size to use a managed service provider? The MSP spend by buyer FTE headcount is dominated by organizations with more than 10,000 employees, with Staffing Industry Analysts research finding such organizations account for 68% of total MSP market spend. However, growth is expected in the mid-market as suppliers develop mid-market offerings, according to the MSPs surveyed in the SIA report: “MSP Market Developments Part 2 – Market Size and Growth, August 2016.”