Thank you for your comment. Highlighting the need for a descriptive format to orchestrate services implemented in multiple languages is a valid point. While Infinitic currently uses Java's interfaces, adopting a more generic and language-agnostic solution like Protobuf is a sensible approach that could promote better interoperability across different tech stacks. Then we need a DSL. Again, Infintic is using Java/Kotlin, but I'm thinking to the ideal solution as a new simple language in which Protobuf object are first-class citizen and that can be resumable (i.e whose internal state can be safely stored to be resume later). It's not as easy as it sounds as a lot of legit issues arise regarding versioning.