Global Endpoints started as a whiteboard sketch about failover and ended as a generally available feature. The middle is the interesting part.
The bet
The bet was that customers would trade a little complexity for the confidence that their events keep flowing when a region has a bad day. Conviction is easy on the whiteboard. It gets tested the first time the design meets a real customer's mental model.
Draft
This post is a stub. Drop in the real teardown, the timeline, and the lesson when you write it.