Cisco Systems is a multinational technology company that specializes in networking hardware, software, and services. They are headquartered in California, USA, and have offices around the world. Cisco's products and services are used by businesses, governments, and consumers to connect and collaborate securely and efficiently. Their portfolio includes routers, switches, firewalls, wireless access points, and network management software, among others. Cisco is also a leader in cloud computing and cybersecurity, offering solutions to help organizations manage their data and protect against cyber threats.