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Confused about when to use Server Components and Client Components in Next.js? Understanding the difference can help developers build applications that are faster, scalable, and easier to maintain. With the Next.js App Router, Server Components are used by default. They are suitable for data fetching, static content, database-driven information, and SEO-focused pages. Since their rendering code doesn't need to be sent to the browser as JavaScript, they can help reduce unnecessary client-side JavaScript. Client Components, on the other hand, are designed for browser-side interaction. They are useful when an application requires features such as useState, useEffect, event handlers, interactive forms, browser APIs, animations, or real-time UI interactions. For example, a property website could use Server Components for property details, descriptions, and location information, while Client Components could handle an image gallery, contact form, or wishlist button. The key is not to choose one approach exclusively. A well-structured Next.js application can combine both, keeping data-driven content on the server while using Client Components only where user interaction is required.
