Web Audio is a powerful JavaScript API that allows developers to create and manipulate sound in web applications. It provides tools for audio playback, processing, and analysis, enabling features like spatial audio, sound effects, and real-time audio synthesis. This makes it ideal for building interactive music applications, games, and multimedia experiences. With Web Audio, developers can work with audio nodes, which are components that handle different audio tasks. These nodes can be connected in various ways to create complex audio graphs, allowing for dynamic sound manipulation. This flexibility enhances user engagement and enriches the overall web experience.