Mats: Besides a very small gRPC API, and a REST API, our tool doesn’t interact with the JVM software directly so there haven’t been any issues with interoperability yet. The problems faced are more organizational in nature, where our team should be the domain experts on all things related to RELEX Plan while we are narrowly focused on our own stack. On the upside, we have the possibility to cross-pollinate the other teams with functional programming idioms such as immutability and purity.