Word-of-mouth marketing refers to the organic spread of information about a product, service, or brand through conversations among consumers. It occurs naturally when satisfied customers share their positive experiences with friends, family, and colleagues, often leading to new customers and increased brand credibility. Word-of-mouth marketing is highly effective because it leverages the trust and credibility of personal recommendations, making it more influential than traditional advertising. Businesses can encourage word-of-mouth marketing by providing exceptional products and services, fostering strong customer relationships, and creating memorable brand experiences that customers want to talk about.