What does a CDN do?
Websites never know exactly how many visitors come by. So if you want to make sure that your site can handle all the traffic, you need spare capacity. That is an expensive investment. To avoid having to do that, many websites use content distribution networks (CDN).
The data of a website is then divided over various servers worldwide. When a user goes to a website, the CDN determines which server is currently sending the information to the user. This ensures that websites load very quickly, wherever you are. It is also useful for companies to use a CDN because they protect against DDO and hacking attacks.
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