This document defines case study research and outlines its key aspects. It discusses the origins and definitions of case studies, provides examples of different types including exploratory, explanatory, intrinsic, and instrumental. The document also details steps in case study research including determining questions, selecting cases, preparing and collecting data, evaluating and analyzing data, and preparing a report. It discusses designs such as single or multiple case studies and principles of collecting data from multiple sources and maintaining a chain of evidence.