What Is a CDN?
A CDN (Content Delivery Network) is a worldwide network of servers that stores copies of your site's files and serves them from a location close to each visitor.
It matters because distance affects speed. A CDN means a visitor in Sydney gets your images from a nearby server rather than waiting for them to travel from the UK, making your site faster for everyone.
An Everyday Analogy
A CDN is like a chain of local depots instead of one central warehouse. Goods are stored near customers, so delivery is quicker no matter where they are.
- Copies of files sit in many locations.
- Visitors are served from the nearest one.
- It absorbs traffic spikes smoothly.
- It helps shield against certain attacks.
Why It Matters to You
For sites with a wide audience or heavy media, a CDN is one of the simplest ways to improve performance.
- Faster page loads for international visitors.
- Better resilience during busy periods.
- Lower load on your main server.
- Improved scores on speed and SEO tests.
If you need a hand with any of this, your Progressive Robot delivery team is ready to help. Raise a ticket from the Support area of your client portal or speak to your account manager and we will guide you through the next steps.