Claudio Fern\xe1ndez-Ar\xe1oz, a senior adviser at the global executive search firm Egon Zehnder, makes the case for finding a company\u2019s next CEO inside the firm. But to find the best contenders, organizations have to learn what to look for, how to find it, and how to nurture it. Fern\xe1ndez-Ar\xe1oz is the co-author of the new HBR article \u201cTurning Potential into Success: The Missing Link in Leadership Development.\u201d