First you publish the next version of your service with the new data, then the disparate teams in charge of 12 clients (not you) update the rest of the applicat

First you publish the next version of your service with the new data, then the disparate teams in charge of 12 clients (not you) update the rest of the application, then the old version is retired and every team has coordinated properly. Microservices allow lean coordination, basically just asking every team when they think they'll be ready without anyone messing with someone else's code.