The BCG matrix (named after the Boston Consulting Group that created it) is a portfolio management tool used by a company to help justify investments in products based on their market position. , their growth and the share that each of them represents in terms of turnover... !
The BCG matrix makes it possible to optimize the distribution of resources among the various SBA (Strategic Business Area) of a company.
So, How can the relative market share of the company be measured for a particular SBA?