?ata???ste t?? ??s?a t?? p??a?a µe??d??? a??pt???? t?? BCG (ep?s?? ???st?? ?? p??a?a ?a?t?f??a???? p?????t??, d????aµµa ?a?t?f??a???? ?a? a????s? t?? Boston Consulting Group) se µ???? 50 ?ept? µe a?t? t? p?a?t??? ?a? s???pt??? ß?ß???. ? p??a?a? µe??d??? a??pt???? t?? BCG e??a? ??a ?s???? st?at????? e??a?e?? p?? ep?t??pe? st??? d?e????t?? ?a e?t?p????? ta ast???a, t?? a?e??de?, ta e??t?µat??? ?a? ta s????? st?? t?µ?a e??as?a? t???, ep?t??p??t?? t??? ?a ?aµß????? p?? ???p?e? epe?d?t???? ap?f?se?? ?a? ?a ?ata??µ??? t??? p????? µe s??es?. ?? ß?ß??? a?t? sa? pa???e? µ?a e????st? e?sa???? st?? efa?µ???? t?? p??a?a µet?????? ?efa?a??? a??pt???? t?? BCG st?? a????s? ?a?t?f??a????, st?? d?ad??as?e? ????? ap?f?se?? ?a? st?? ?ata??µ? t?? p????. ?e???aµß??e? ep?s?? t? d?e?e???s? µ?a? p?a?t???? µe??t?? pe??pt?s??, µ?a s???t?s? t?? e??e??e?? t?? e??a?e???, s?µpe???aµßa??µ???? t?? a?t???pt?? a?a???ße?a? ?a? t?? ?pe?ap???ste?s??, ?a? µ?a e?sa???? se s??af? µ??t??a, ?p?? t? GE Matrix t?? McKinsey ?a? t? Ashridge Portfolio Matrix. 

S?et??? µe t?? p??a?a µe??d??? a??pt???? t?? BCG : ? p??a?a? BCG growth-share a?apt?????e t? de?aet?a t?? 1960 ap? t?? Boston Consulting Group ??a t?? p??sd????sµ? t?? s?et???? µe??d??? a????? µ?a? d?ast????t?ta? ?a? t?? a???????s? t?? s?et???? a??pt???? t?? a?????. ??t? ep?t??pe? st??? d?a?e???st?? ?a e?t?p????? p??e? d?ast????t?te? e??a? ?e?d?f??e? ? ????? ?????? d??at?t?te?, a??? ?a? p??e? d?ast????t?te? ß??s???ta? se pt?s? ?a? p??e? e??a? p??a?? ?a ?ata??e?s???. ??t? ??e? s?µa?t???? ep?pt?se?? ?ta? ap?fas??eta? se p????? t?µe?? ?a d??e? ?µfas? ?a? p?? ?a d?ate???? ?? sp????? p????. Se a?t? t? ß?ß???, ?a a?a?a???ete p?? µp??e? ?a sa? ß????se? ? p??a?a? t?? BCG ??a t? ?ef??a?? a??pt????, ?a µ??ete p?? ?a ?atat??ete t?? st?at?????? sa? ep??e???µat???? µ???de? st?? t?sse??? ?at?????e? ?a? ?a ???s?µ?p???sete ta e???µat? sa? ??a ?a ??ßete ?a??te?e? ep??e???µat???? ap?f?se??. ??a saf?? e????s? t?? p?e??e?t?µ?t?? ?a? t?? p??a??? µe???e?t?µ?t?? t?? µe??d??, µ?a s???t?s? µ?a? p?a?t???? µe??t?? pe??pt?s?? ?a? µ?a e?sa???? se s??af? µ??t??a sa? d????? ta e??a?e?a p?? ??e???este ??a ?a p??sa?µ?sete t?? p??s????s? sa? st?? pe??pt?s? sa?.