Eevee is a real-time rendering engine within Blender, designed to provide high-quality, fast visualizations of 3D scenes. It is primarily used for quick rendering of animations and stills, offering results close to what can be achieved with traditional ray tracing. Eevee leverages advanced features like screen space reflections, bloom, and ambient occlusion to achieve photorealistic effects in real-time. It's widely used in animation, game development, and visual effects, where artists need immediate feedback while creating or adjusting scenes. Eevee is an excellent tool for creators looking to achieve high visual fidelity without waiting for long rendering times.