The job title hasn’t changed, but the job has. Chief Information Officer still appears on the org chart, still owns the technology budget, still carries the pager—metaphorically, at least—when systems go down. But the CIOs who are making the most impact in their organizations today are doing something fundamentally different from their predecessors. They are not running IT. They are building digital businesses inside existing businesses, reshaping how value is created, delivered, and measured.