Catalyst 9500 is a series of enterprise-class switches from Cisco. It is designed to provide high performance, scalability, and security for enterprise networks. It features a range of advanced features such as Cisco DNA, Application Visibility and Control, and Cisco TrustSec. It also offers a range of modular and fixed form factors, allowing for flexible deployment options. The Catalyst 9500 series is ideal for organizations looking for a reliable, secure, and high-performance switching solution.