Simplex Noise is a gradient noise function developed by Ken Perlin in 2001. It is designed to produce smooth, continuous patterns that are visually appealing and useful in computer graphics. Unlike traditional noise functions, Simplex Noise reduces artifacts and provides better performance in higher dimensions. This noise algorithm is often used in procedural generation, such as creating textures, landscapes, and other natural phenomena in video games and 3D modeling. Its ability to generate coherent noise makes it a popular choice for artists and developers looking to create realistic environments and effects.