We often associate leadership with an individual, but there are situations where the top positions are shared — along with the responsibilities, decisions, and accountability that comes with them. A lot of focus has been on the ups and downs of high-profile co-CEOs and co-founders — think Salesforce, Netflix, Goldman Sachs, Oracle, SAP, and Warby Parker. But co-leadership is also practiced within business units, divisions, and projects, especially after acquisitions, when there’s a perceived need for representation of both groups.