In today’s densely interconnected workplaces, working with others — closely, creatively, globally, and productively — drives organizational and personal effectiveness. Employees work in teams formed to tackle particular projects. They work in virtual teams with colleagues, suppliers, clients, and even competitors they never actually meet. They work in ad hoc combinations, in groups that emerge naturally around the coffee machine or in the corridor. Whatever the provenance and profile of the multiple teams in your workplace, your organization depends on them.