The bcg matrix is a chart created in 1970 and was designed to help businesses analyze there product and business line. This tool is able to help companies allocate their resources to best serve their business growth. What this tool does is creates a map that analyzes the companies probability strength and weaknesses. This is important to the company to manage cash flow and market growth rate.
. Once widely used, it has since become distinct as more defined and comprehensive tools have come to play into today's market. You can find more information here: http://en.wikipedia.org/wiki/Bcg_matrix