A speed test for the internet is a tool or service that measures the speed and performance of your internet connection. It typically measures key metrics such as download speed, upload speed, and latency. These tests are often conducted by accessing a website or using a dedicated application, which then communicates with servers to send and receive data packets, simulating real-world internet usage. The results of the speed test can help you determine if your internet service provider is delivering the promised speeds and identify any potential issues with your connection.