WebGL2 is a JavaScript API that enables developers to create high-performance, interactive 3D graphics in web browsers without the need for plugins or additional software. As a successor to WebGL, WebGL2 provides improved features and functionality, making it a crucial tool for developers building immersive web experiences, such as games, simulations, and interactive visualizations, and is particularly relevant to the tech community as it continues to push the boundaries of what's possible in web development.