WebUSB is a web standard that allows web applications to communicate directly with USB devices. This technology enables developers to create web apps that can interact with hardware, such as printers, cameras, and other peripherals, without needing additional software or drivers. By using WebUSB, users can connect their devices to a web page and perform tasks like transferring files or controlling hardware directly from their browser. This simplifies the user experience and enhances the capabilities of web applications, making it easier to integrate physical devices into online services.