This document discusses several patterns of business models that can be identified. It describes the pattern of unbundling, where a business is divided into customer relationship, product innovation, and infrastructure areas. It also outlines the long tail pattern of selling many niche products in small quantities. Another pattern is the multi-sided platform that connects different user groups. The document examines free business models where one user group subsidizes another. Finally, it introduces the open business model pattern of collaborating systematically with external partners.