A CDN keeps copies of your site in many cities so visitors get it from somewhere close.
A content delivery network stores your files on servers around the world. A visitor in Houston pulls from Texas. A visitor in London pulls from Europe. Less distance means faster loading.
CDNs help most on heavy sites with many images and scripts. A light page benefits too, but it has less to speed up in the first place.
A Think Bright page is small enough that the biggest speed gains come from the file itself. Fewer requests and less weight matter more than any network trick.
A cache is a saved copy of something so it does not need to be fetched or built again.
Page weight is the total size of everything a page downloads, measured in kilobytes or megabytes.
Requests are the separate files a browser must fetch to show one page.
Hosting is the computer that keeps your website online and hands it to visitors when they type your address.
Paste your URL. We rebuild it, show you the match, and measure the speed. No template. No blank page. Human review from start to finish.