Aladtec Inc. offers an online scheduling and workforce management tool catering to First Responders (Police, Fire, EMS, EMT, Dispatch & more).
The tasks their users need to perform can have complex dependencies. Also the existing code is super complex with many authors.
This translated to carefully thoughtout releases for evolving the app. Development phases were structured to have the least disruption in functionality for the end user and the safest adjustments from a coding perspective.