I can't speak for Cloudflare, but I can tell you a few of the things we've done to make Site Optimizer awesome. A big differentiator for us is our focus on browser-specific optimizations. For example, if you visit a page in Chrome we'll swap out the images for WebP versions. WebP is about half the size of JPEG but looks just as good. We've also developed a lot of cutting edge optimizations for mobile that are unique to Torbit. We're also able to leverage the data we get from Insight to make our Site Optimization service better as well.
joshfraser|13 years ago