Also called Business Portfolio Matrix or the BOSTON BOX or the PRODUCT PORTFOLIO MATRIX
Boston Consulting Group developed a techique to classify businesses or products are low or high performers, looking at the parameters Market Growth Rate and Relative Market share

now yap about these
Question Marks - BAD get rid of them asap
STARS - upgraded cash cows , but also need more upkeep
Dogs - risky, can become a cash cow, or can become a question mark
Cash Cows - the best kind, milk them for as much money as you can get and then invest in them till they become a star (when the market grows)
Relative Market Share
measures a business’s or product’s market position by comparing it’s share to that of its largest competitor.
Market Growth Rate
is the percentage change in the total size of a market ( by revenue, volume, or customers ) over a specific period, usually per year.
also read!

porter’s generic strategy