Optimizely Performance Edge is a faster way to deliver client-side web experiments that takes advantage of a distributed network called "the edge." Optimizely Performance Edge is designed to improve page performance by performing targeting and variation assignment tasks at the Edge instead of in the browser.
You have a unique Optimizely Performance Edge endpoint available to you at the Edge. It not only buckets your users into experiments and variations, but also returns only the changes needed to power those experiments and variations on the current page. Asynchronously, it also loads an Optimizely Performance Edge tracking snippet to log visit and conversion events on the page.
## Optimizely Performance Edge is faster
Optimizely Performance Edge takes advantage of the structure of modern content delivery networks (CDNs) to deliver experiments to your visitors faster.
Content that's delivered from a server located close to a website visitor is faster than content delivered from one farther away. A CDN speeds up visitors' experiences of a webpage by placing servers all over the world, often near metropolitan centers.
## The microsnippet
The heavy lifting of experiment computation is moved out of your visitor's browser and into distributed machines all over the world, reducing page load time and making it possible to deliver fast, smart experiments to your site visitors no matter where they are.
See also [Certification exams](🔗) for Optimizely Experimentation Strategist, Optimizely Web Experimentation Platform Expert and other products.