When it comes to many of today`s more complex challenges, real change can only happen when different players team-up across different professions, organizations, and industries. This is why today, a growing number of teams work across organizational boundaries. Amy Edmondson from the Harvard Business School describes the challenges of forming teams around complex challenges. Her newly published book „Extreme Teaming“ is full of inspiring contemporary cases that give an insight on cross-boundary collaboration from a team perspective. It contains practical guidelines on how to bridge professional divides and organizational boundaries in order to work together effectively.