SAGE Business Cases This link opens in a new windowProvides access to over 3,000 business cases spanning a wide range of business disciplines from leadership to entrepreneurship, to family business and social impact. The platform provides select access to cases (click "content available to me"), a user-friendly platform, and downloading cases. SAGE has partnered with 20 business case producers, including Kellogg School of Management (Northwestern), Berkeley Haas (California), and the School of Management (Yale).