SceneKit is an advanced 3D graphics framework created by Apple, allowing developers to craft engaging 3D environments for applications across iOS, macOS, watchOS, and tvOS. It operates on top of Metal and OpenGL, delivering a user-friendly API for the importation, manipulation, and rendering of 3D assets. Developers are able to build intricate scenes using nodes (SCNNode), which symbolize various elements such as geometrical shapes, lighting, cameras, and additional attributes. The framework encompasses a variety of features, including a physics engine (SCNPhysicsBody) that facilitates realistic simulations, particle systems that create visual effects like fire or rain, and compatibility with ARKit to enhance augmented reality experiences by incorporating 3D content. SceneKit also provides organizational tools, such as the scene graph, which enables the hierarchical arrangement of nodes for better scene management. Furthermore, the integration of the SceneKit Scene Editor in Xcode simplifies the process of assembling assets into cohesive scenes, making it easier for developers to streamline their workflows and enhance the overall productivity of their projects. Overall, SceneKit represents a powerful asset for anyone looking to delve into 3D graphics development on Apple's platforms.