What are the best practices for optimizing performance in Unity games?

Performance optimization in Unity itself comes down to reducing draw calls by optimizing the assets with efficient coding practices. The number of rendering objects on-screen should be kept as few as possible; instead, texture atlases conserve memory. This is balanced by techniques such as LOD (Level of Detail), which balance how much detail is being rendered. Unity provides the developer with a built-in tool called the Profiler that will show exactly where the chokes in performance are occurring within a game. One of the efficient techniques for resource management and keeping things smooth, even on low-end devices, is object pooling.