Investment banking is a specialized segment of the financial services industry that plays a critical role in helping companies and governments raise capital. Investment banks perform various functions such as underwriting, M&A advisory, sales and trading, research, and risk management. They serve a wide range of clients, including corporations, governments, institutional investors, and high-net-worth individuals. Investment banking is a complex and highly regulated industry that requires specialized knowledge and expertise. However, when done properly, it can provide significant benefits to all parties involved, helping companies raise capital and investors make informed investment decisions.