A knowledge base is significant in customer support as it serves as a comprehensive repository of information that helps address customer queries effectively. It comprises articles, FAQs, guides, and troubleshooting tips, allowing customers to find solutions independently, thereby enhancing customer satisfaction. A well-maintained knowledge base can improve self-service options, reduce response times, and lessen the burden on support teams. Moreover, it ensures consistent communication and enables continuous improvement through the incorporation of user feedback and evolving best practices.