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In DSpace, Angular's Server Side Rendering (SSR) feature is enabled by default (only when running in production mode). However, it's important to ensure you do not disable it in production mode, as most search engine bots cannot index your site if SSR is disabled.  Per the frontend Installation instructions, you MUST also be running your user interface in production mode (via either yarn either npm run serve:ssr or yarn or npm start). 

Because the DSpace user interface is based on Angular.io (which is a javascript framework), you MUST have server-side rendering enabled (which is the default) for search engines to fully index your side.  Server-side rendering allows your site to still function even when Javascript is turned off  in a user's browser.  Many web crawlers and bots do not support Javascript (e.g. Google Scholar), so they will only interact with this server-side rendered content.

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