MediCorp, a multinational medical device manufacturer, is experiencing inconsistent product quality across its three geographically dispersed production facilities. Facility A, located in the EU, adheres strictly to European Medical Device Regulation (MDR) requirements. Facility B, situated in the United States, follows FDA guidelines, while Facility C, in Southeast Asia, struggles with documented procedure adherence despite local regulatory requirements. An internal audit reveals that while each facility has a QMS, their implementation varies significantly, leading to discrepancies in product quality, documentation practices, and training effectiveness. Senior management is concerned about potential regulatory non-compliance and the impact on brand reputation. Considering the requirements of ISO 13485:2016, what is the MOST effective initial strategy for MediCorp to address these inconsistencies and ensure consistent product quality across all facilities?