This paper describes the role of online instruction in one traditional case-based course at Columbia University. We first discuss the benefits of online instruction, then detail the experience within one course, Sustainability Management, which experimented with incorporating elements of online learning into its traditional face-to-face instruction, and then analyze our experience with this innovation. The purpose of this paper is primarily descriptive: to provide a summary of the methods by which online education can be formatted within the context of case-based in-person courses to help other universities that may be planning similar courses of study