Every few months I get a call from a CEO asking for a private meeting to talk about the company’s current CMO. Typically, the CEO has grown unhappy with the CMO and is thinking about making a change. But first, he or she wants to talk through the various options and get a quick overview of the landscape for the very best senior talent.

A version of this article appeared in the July–August 2017 issue (p.59) of Harvard Business Review.