Angular is just great for building powerful single-page web applications. However, as with all single-page web applications, there is a disadvantage when it comes to search engine optimization.
Usually single-page applications are rendered on the client side and therefore web crawlers of search engines like Google and Bing are not able to see the complete structure and content of the individual pages of the websites. With this limitation in place,it is not possible to list your website correctly in search engine results.
However, there are techniques and packages to make this work, but it is an extra effort in terms of development. Angular universal is a way to render the Angular application of the server itself. The technology enables server-side rendering for Angular applications. Angular Universal generates static application pages on the server through a process called server-side rendering.
While Angular universal takes care of most aspects, it still requires a lot of setup. If you prefer to do it all manually, there are documents available to help you do that but there are gotchas that you need to watch out for.
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