This document provides an overview of the Business Model Canvas tool. It describes the 9 building blocks that make up the Business Model Canvas, including Customer Segments, Value Propositions, Channels, Customer Relationships, Revenue Streams, Key Resources, Key Activities, Key Partnerships, and Cost Structure. It then explains how to use the Business Model Canvas to map out a business model and identify relationships between different elements. The document also introduces other related tools like the Value Proposition Canvas and presents examples of how well-known companies like low-cost airlines and Skype have applied business model thinking.