For a long time, whenever companies wanted to hire a CEO or another key executive, they knew what to look for: somebody with technical expertise, superior administrative skills, and a track record of successfully managing financial resources. When courting outside candidates to fill those roles, they often favored executives from companies such as GE, IBM, and P&G and from professional-services giants such as McKinsey and Deloitte, which had a reputation for cultivating those skills in their managers. Read this great HBR article to find out more.