I&#x27;m also <i>really</i> confused as to why they insisted on taking full tables at their edge if they also built their own route optimization technology. It seems like it would be much simpler and faster if they just took a default route from each provider and then did route probing on their top 30% prefixes in each PoP. You don&#x27;t need full edge routes for that.<p>You need a single route reflector (or two for redundancy) to tell you what routes are in the table. Then probe the busiest prefixes (as determined by flow data) via each provider and take the best route. Localpref the best route higher in the route reflector and send it to the Linux hosts. No need for a huge FIB on the edge. This is basically what Noction IRP&#x2F;Internap FCP platforms already do.<p>This reminds me of the scene in Primer where they ask if they&#x27;re doing it for a reason or just showing off.<p>FWIW, the Netflix networks just take a default route from a pair of transit networks in each PoP. At their scale, they found it better to negotiate better worldwide transit deals than optimize networking at the PoP level. Different game than Fastly, but another data point.