Ranjay Gulati is a professor at Harvard Business School. He is an expert on leadership, strategy, and organizational issues in firms. His recent work explores leadership and strategic challenges for building high growth organizations in turbulent markets. Some of his prior work has focused on the enablers and implications of within-firm and inter-firm collaboration. He has looked at both when and how firms should leverage greater connectivity within and across their boundaries to enhance performance. In his most recent book, "Reorganize for Resilience: Putting Customers at the Center of Your Organization," he explores how "resilient" companies—those that prosper both in good times and bad—drive growth and increase profitability by immersing themselves in the lives of their customers.