A broker is a person or firm that acts as an intermediary between buyers and sellers. They help facilitate transactions in various markets, such as real estate, stocks, or insurance. Brokers earn a commission or fee for their services, making it easier for clients to navigate complex processes and find the best deals. In the world of finance, stock brokers play a crucial role by buying and selling stocks on behalf of their clients. They provide valuable advice and insights, helping investors make informed decisions. Overall, brokers simplify the buying and selling process, ensuring that clients achieve their financial goals.