The Internet is a global network of computers and other devices that communicate with each other using standardized protocols. To connect to the internet, you need an internet service provider (ISP) that provides a connection to their network. The most common types of internet connections are broadband, such as cable and DSL, and wireless, such as Wi-Fi and cellular data.
Once connected to an ISP, your device requests to access a website or service using a web browser or app. This request is sent through a series of routers and switches on the ISP's network, as well as the internet backbone, which is a network of high-speed data links that connect major hubs and data centers around the world. These routers and switches use the Internet Protocol (IP) to identify and route data packets between different devices on the network.
When the request reaches the destination website or service, the server sends back the requested data, which is divided into packets and sent back through the network to your device. The data packets are reassembled into the original file or webpage by your device, and you can then view or use the requested content. This process happens incredibly quickly, often in just a few milliseconds, allowing you to easily access a vast array of information and services from around the world.