Cisco Systems is a company that makes special boxes that help people communicate with each other using the internet. Just like how you can call and talk to someone on a phone, people can use the internet to talk to each other using computers and other devices like phones and tablets. These special boxes, also known as routers and switches, help the internet work better and faster by sending messages to the right places. Think of them as traffic police for the internet.
Cisco's boxes are used all around the world by big companies and organizations like Google, banks, hospitals, and even the government. They help these important groups stay connected with each other and with the rest of the world. So, Cisco is like a superhero that makes the internet work better and helps people to communicate faster and easier.