Indeed! Conway's the man. Unless your "service" corresponds to an actual existing team who has the time and authority to focus on it, you are asking for trouble

Indeed! Conway's the man. Unless your "service" corresponds to an actual existing team who has the time and authority to focus on it, you are asking for trouble and/or wasteful busywork. I curse misapplied microservices. By the way, for a relatively small service to be shared by multiple applications, try RDBMS stored procedures first.