Enterprise Resource Planning (ERP) Systems Market Share is the estimated portion of the total ERP market that a particular vendor is able to capture. These systems are used by businesses to track, manage and utilize their resources in a more efficient manner, providing for increased productivity and profitability. Businesses use this measure to evaluate the strength of their competitors, identify opportunities in the market, and decide where to allocate their resources. Knowing what portion of the market your product or service occupies gives you an edge in the ever-changing business landscape.