This article provides a comprehensive overview of investment banking, covering everything you need to know about this important sector of the financial services industry. From defining what investment banking is to discussing the role investment banks play in the global economy, this guide is an essential resource for anyone looking to better understand the world of finance. The article also explores the various functions of investment banks, such as underwriting securities, providing merger and acquisition advisory services, and assisting with capital raising efforts. Additionally, it discusses the key players in the investment banking industry, including bulge bracket firms, boutique investment banks, and independent advisory firms. Whether you're an aspiring investment banker or simply curious about this field, this guide offers valuable insights into the world of investment banking.