Customer data refers to the information collected about individuals who purchase or show interest in a company's products or services. This data can include names, contact details, purchase history, preferences, and feedback. Businesses use this information to understand their customers better and tailor their offerings to meet their needs. By analyzing customer data, companies can identify trends and patterns that help improve marketing strategies and enhance customer experiences. For instance, knowing what products are popular among certain demographics allows businesses to target their advertising more effectively. Ultimately, customer data plays a crucial role in building strong relationships between companies and their customers.