On edge architecture

He mentions Cloudflare and AWS, but most new startups will be overwhelmed by the complexity of the initial setup of an edge architecture. However, there is a new generation of startups that are moving to automate the setup of edge architectures, so that future startups can take the edge for granted, in the same way that AWS lets them take web servers for granted. I'm thinking of companies such as Mutable: https://blog.mutable.io/mutable-the-paas-solution-for-5g-edg...

Also, as an alternative to massively complex edge compute, read up on the Vary: header: https://tools.ietf.org/html/rfc7231#section-7.1.4

(Caveat: it's an appallingly vague spec, and Vary is frequently badly implemented, or not at all).

It sounds like this amounts to having multiple servers all over the world running your server-side application. Is that right?

What are the security implications of a setup like this? How does data storage work, especially PII or business-sensitive data?