given the sprawl of a ton of micro-services has anyone based on a central service bus style maybe with kafka where services work a lot like unix pipes instead o

given the sprawl of a ton of micro-services has anyone based on a central service bus style maybe with kafka where services work a lot like unix pipes instead of ever changing APIs -- sure GRPC mitigates some of that but I am curious as having a central source of truth that is also stateful but not a relational database etc., that works and the whole pub/sub style