Workload identity in Apache Camel with SPIFFE and SPIRE

Camel 4.23 is planned for October and it adds a new component, camel-spiffe. The problem it solves is not obvious if you have never looked at SPIFFE, so I want to explain what it is for, what it does, and point at the example I wrote for it. The problem Two services that talk to each other need to know who is on the other side.