Collaboration is essential to manage complex real world problems. We used phenomenologic methods to elaborate a description of collaboration between two departments at an academic medical center who considered their relationship to represent a model of effective collaboration. Key collaborative structures included a shared vision and commitment by leaders, rigorous quality improvement, clear delineation of roles with built-in flexibility, ongoing commitment to formal and informal communication channels and conflict resolution, relationship development grounded in respect and responsiveness, and shared training in a supportive learning environment with legitimate participation fostering skill development. This study reveals the complexity and resources required for collaboration which both explains why collaboration is not as easy to achieve and identifies processes that foster collaboration. (Contains 1 table.)