Author: Angelo Saraceno House rule: every claim in this post is sourced. If I can’t back something up, I cut it rather than handwave. I spent years at Citrix building customer environments for Verizon and Lockheed, the kind of shops where “multi-region” was a checkbox on a procurement form before it was an engineering decision. The pattern repeats at scale-ups now. A founder reads that Discord runs in multiple regions, a CTO sees a competitor’s status page boasting about active-active, and sudde