This chapter presents a review to justify Astra International (Astra) as the case study based on the purposeful sampling criteria (Patton, 1990; Yin, 2009). The research gaps apparent from the literature review in Chapter 4 show a need for research to illuminate the roles of companies in contributing to the sustainable development of a developing country. The research gaps also show a requirement to investigate why and how the concepts of sustainable development, corporate social responsibility (CSR), social capital and corporate sustainability evolve over time in a corporate practice. This chapter demonstrates that Astra matches the characteristics of a large company required for the case study to achieve the research objectives. Astra started as a family business in 1957 and became one of the largest listed public companies in Indonesia. It has more than 30 years of experience in institutionalising CSR into corporate philosophy, organisation structure and programs that contribute to economic, social and environmental development of Indonesia.