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What is the difference between SSR, SSG, and ISR in Next.js?

SSR (Server-Side Rendering) generates pages on every request. SSG (Static Site Generation) generates pages during build time and serves static files. ISR (Incremental Static Regeneration) combines both approaches by generating static pages and updating them periodically without requiring a full rebuild. The choice depends on how frequently the content changes.

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JB

Jeevan Bhargav

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This answer is calibrated for technical interviews. Verify benchmarks in local sandboxes before deploying.