Answer
Lazy loading loads resources only when needed using dynamic imports, code-splitting, or IntersectionObserver for assets. Reduces initial page load time and improves performance.
Quick Answer
Module lazy loading: const { HeavyComponent } = await import('./heavy') — load only when needed. In React: React.lazy(() => import('./Component')) with Suspense. In bundlers, dynamic import() creates a code split point. For images: IntersectionObserver triggers load when entering viewport, or native loading="lazy". Both reduce initial page load and improve Time to Interactive.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ