3 ms·

Well, AWS does have a strong CDN offering called Cloudfront so it is surprising.

• paavohtl 5y ago
  My understanding is that Fastly has a lot more edge locations than AWS, so using their image CDN results in lower latencies for many users than they could achieve with Cloudfront alone.
  • aaron42net 5y ago
    It's not edge location count that matters, but Cloudfront doesn't use BGP Anycast but rather does a more traditional DNS-based routing and tries to spread the requests across multiple edge locations (even those farther away) for redundancy, intentionally. When I asked for detail about why they don't use Anycast, the Cloudfront engineering team basically said their customers care more about uptime than latency and that full Anycast was too sketchy. Apparently amazon.com disagrees, at least. I'm also happy getting much lower first page view latency out of Cloudflare.