To prevent the issue where the operations manager was not notified in advance of a new service being transitioned into operations, the program manager should have first:
C. Ensured there was a communications management plan that included the transition to operations.
Having a comprehensive communications management plan in place, which specifically includes the transition to operations, is crucial for ensuring that all relevant departments and stakeholders are appropriately informed and prepared for the changes. This plan should outline the communication of key milestones, transitions, and training requirements to all affected parties, including the operations department. By doing so, it would have ensured the operations manager was aware and prepared for the new service, thereby avoiding the scenario of being unprepared and untrained.