This document discusses the importance and value of business modeling. It begins by defining a business model as a simple representation of the complex reality of a business. It then describes the rise of business modeling, driven by the need for communication between parties, managing increasing complexity, and enabling change. The key benefits of business modeling include improved communication, training and learning, persuasion and selling, analysis of business situations, compliance management, software requirements development, and knowledge management. Integrating multiple modeling disciplines provides the most insightful models.