Dan Carlin, of Hardcore History fame, repeats a difficult to attribute quote that “Quantity has a quality all of its own.” When talking about the Edge, quantity’s qualitative aspect is impossible to ignore.
Edge is about reducing latency between users or data and applications. In the cloud that might mean replicating to another availability zone. Globally there are dozens of locations that can get you lower latency. If that is not enough CDNs can take into hundreds of datacenters with still lower latency. Edge datacenter providers like Vapor.io and Dartpoints are targeting tens of thousands of Edge locations.
Those are all great Edge locations. Trustgrid’s definition of Edge is by far the largest. Hundreds of thousands or millions of locations integrated into a single management infrastructure that delivers the lowest latency application and data deployment platform.