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Static Site Generation and Server Side Rendering are different types of pre-rendering a website and its combination with a CDN. With [max-age], the CDN can control how long the page can be cached. With Stale While Revalidate, the server is building a fresh version of a page while a new request comes a new version of it will be generated in the server and uploaded to the server. This means the user does not have to interact with the server so the user gets a **fast response**