What is a CDN and how does it work?
Posted: Mon Apr 21, 2025 5:26 am
Nadine WinklerNadine Winkler | July 18, 2017
Even if broadband expansion in Germany has not yet progressed at the same rate everywhere, it can already be said that the internet and data transmission have developed at a proverbial rapid pace. Who doesn't (unpleasantly) remember the old 33.6 modems with which you dialed up to the internet and could then happily go for a coffee while a website was loaded? Those days are thankfully a thing of the past. Nowadays, well-optimized websites are loaded and displayed in the browser in milliseconds. Even on mobile devices, transmission has become much faster thanks to LTE. Users nowadays expect content to be delivered quickly. Analytics tools can be used to measure how the bounce rate increases when the website loads too slowly.
It's also worth noting that Google has made website speed one poland cell phone number list of its ranking factors. This is only logical, since Google's goal is to present users with the highest-quality website available for their search queries. This includes the user experience, and a slow-loading website simply doesn't provide a positive user experience.
We've already presented a few options for page speed optimization in a blog post . The use of a CDN is one of them. We'll introduce it here today.
CDN – What is it?
The abbreviation CDN stands for Content Delivery Network – it's a network that makes content available. So far, so good. Why can this be useful for your website?
A typical use of a CDN is for images. The principle is that images aren't stored on your own server and accessed by users from there, but rather distributed across a network of servers around the world. The images are then simply "embedded" on your website like an external source. This saves your own resources.
Even if broadband expansion in Germany has not yet progressed at the same rate everywhere, it can already be said that the internet and data transmission have developed at a proverbial rapid pace. Who doesn't (unpleasantly) remember the old 33.6 modems with which you dialed up to the internet and could then happily go for a coffee while a website was loaded? Those days are thankfully a thing of the past. Nowadays, well-optimized websites are loaded and displayed in the browser in milliseconds. Even on mobile devices, transmission has become much faster thanks to LTE. Users nowadays expect content to be delivered quickly. Analytics tools can be used to measure how the bounce rate increases when the website loads too slowly.
It's also worth noting that Google has made website speed one poland cell phone number list of its ranking factors. This is only logical, since Google's goal is to present users with the highest-quality website available for their search queries. This includes the user experience, and a slow-loading website simply doesn't provide a positive user experience.
We've already presented a few options for page speed optimization in a blog post . The use of a CDN is one of them. We'll introduce it here today.
CDN – What is it?
The abbreviation CDN stands for Content Delivery Network – it's a network that makes content available. So far, so good. Why can this be useful for your website?
A typical use of a CDN is for images. The principle is that images aren't stored on your own server and accessed by users from there, but rather distributed across a network of servers around the world. The images are then simply "embedded" on your website like an external source. This saves your own resources.