This introduction to investment banking course provides a clear overview of how investment banks operate and the different roles within the financial services industry. It starts by explaining what investment banking is and what investment bankers actually do, giving learners a strong foundation in the field. The course compares investment banks with commercial banks and highlights the key differences in their functions and business models. It also introduces equity research and explains how analysts generate insights and support investment decisions. In addition, the course covers asset management companies and explains how they manage client investments across different asset classes. Learners will understand the distinction between buy-side and sell-side roles, as well as how sales and trading divisions operate within investment banks. The course also explains how investment banks help companies raise capital through underwriting and market-making activities. A major section focuses on mergers and acquisitions (M&A), explaining how deals are structured and executed. It also introduces restructuring and reorganization processes used when companies face financial challenges. By the end of this course, learners will have a solid understanding of the investment banking ecosystem, its main divisions, and how financial institutions support capital markets and corporate finance activities.