Hehehe. This is absolutely true and trying to explain it to anyone around me makes me feel like a Cassandra quoting battlestar galactica: "All of this has happened before. All of this will happen again". I'm not even old, I just happened to witness the tail end of SOA when I was still a student, followed by the rise of micro-services afterwards. Your service mesh is just someone else's message bus. Sure, it's different. Except not really. Also, bonus points for younger developers reinventing features for json APIs that SOAP already had.