Performance and UX

CDN

Also known as: Content Delivery Network

Distributed infrastructure serving resources from locations closer to users, often with caching.

A practical example

Store images are served from a regional edge server.

What should I know?

A CDN does not automatically fix incorrect content or application logic.

Performance and UX in practice

Assess real users' experiences on their devices. Lab tests help identify causes, while user data shows the scale of a problem. A good website also makes information easy to find and tasks easy to complete.

Related Semly features

See where this concept applies when working with Semly.

Google Search ConsoleConnect search data to Semly. Analyze queries and page performance when planning next steps.AI analyticsCompare visibility, position, sentiment, and brand share in AI answers.

Related terms

CacheStoring a prepared response or resource to serve later requests faster.TTFBTime from starting a request to receiving the first response byte.Image optimizationChoosing image dimensions, compression, format, and loading behavior for their use.

Documentation and further reading

Definition prepared by Semly. Standards and behavior are described by their creators:

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