Iyini i-MBB futhi imelelani?
Context:IMcKinsey & Company iyinkampani yokubonisana nokuphathwa komhlaba wonke eyasungulwa ngo-1926 nguprofesa waseYunivesithi yaseChicago uJames O. McKinsey, enikezela ngezinsizakalo zobungcweti ezinkampanini, kohulumeni nakwezinye izinhlangano. IMcKinsey iyona endala futhi inkulu kunazo zonke ezinkampanini ezintathu ezinkulu zokweluleka ngokuphathwa (i-MBB), amafemu amathathu amakhulu okucebisa ngecebo lomhlaba ngokwemali engenayo. Le nkampani igxila kakhulu kwezezimali nasekusebenzeni kwamakhasimende ayo.  Ngaphansi kobuholi bukaMarvin Bower, uMcKinsey wanda eYurophu phakathi nawo-1940 nawo-1950. Ngawo-1960, uFred Gluck waseMcKinsey - kanye noBruce Henderson waseBoston Consulting Group, uBill Bain waseBain & Company, noMichael Porter waseHarvard Business School - bashintsha isiko lezinkampani. Ngo-1975 uJohn L. Neuman waseMcKinsey wethula umkhuba webhizinisi "wokuhlaziywa kwezindleko eziphezulu" okwaba nomthelela ekunciphiseni izisebenzi okwaqeda imisebenzi eminingi kubaphathi abaphakathi.
I-MBB ibhekisela ezinkampanini "ezithathu ezinkulu" zokweluleka ngokuphathwa. Kusukela esigabeni, akucaci kahle ukuthi imelelani, kodwa iMcKinsey ifakiwe ku-MBB njengoba iyindala futhi inkulu kunazo zonke eqenjini.