Revenue is the total amount of money a business earns from its activities, such as selling products or providing services. It is a crucial measure of a company's financial health and is often referred to as the "top line" because it appears at the top of the income statement. For example, when a restaurant sells meals, the money received from customers contributes to its revenue. Understanding revenue helps businesses make important decisions, like setting prices or planning for growth. It can come from various sources, including sales, subscriptions, or advertising. Tracking revenue allows companies to assess their performance and strategize for future success.