Customer satisfaction refers to the degree to which a product or service meets or exceeds the expectations of its users. It is often measured through surveys and feedback, allowing businesses to understand how well they are serving their customers. High levels of customer satisfaction can lead to repeat business, positive reviews, and increased loyalty. Factors influencing customer satisfaction include product quality, customer service, and overall experience. Companies like Amazon and Apple invest heavily in understanding customer needs to enhance satisfaction. By addressing concerns and improving offerings, businesses can foster a positive relationship with their customers, ultimately driving success and growth.