The main function of a knowledge base in customer support is to provide a centralized repository of information that enables customers and support staff to access answers to common questions and issues. A well-structured knowledge base includes articles, FAQs, and tutorials designed to assist users in troubleshooting and resolving problems independently. This not only improves the efficiency of support teams by reducing the number of incoming queries but also enhances customer satisfaction by providing quick and easy access to solutions. Ultimately, a knowledge base fosters a self-service culture in customer support operations.