All of these are common challenges when implementing lazy loading. Handling loading states gracefully requires thoughtful UI design to prevent jarring transitions. Browser compatibility can be an issue with older browsers that don't support dynamic imports natively (requiring transpilation or polyfills). Deployment pipelines become more complex because you need to ensure all code chunks are properly built, versioned, and cached. Additionally, testing lazy-loaded code paths and diagnosing issues across chunk boundaries adds complexity to the development process.