The document discusses Girota and Netessine's Business Model Innovation Matrix, which helps companies identify areas to change their business model by considering four decision areas: what, when, who, and why. It provides examples of business model changes in each area, such as Netflix switching from mailing DVDs to streaming. The matrix can be used for both new and established business models. The document advocates regularly evolving business models as customers, competitors, and markets change. It provides steps for conducting a business model audit to identify inefficiencies and make changes to improve efficiency and reduce risk.