You are a project officer for the European External Action Service (EEAS) tasked with coordinating a joint cybersecurity initiative with a non-EU partner country. The initiative involves sharing sensitive diplomatic data via a cloud-based collaboration platform. According to the EU's commitment to a rules-based global order and the coordination of international action, which of the following actions best ensures the integrity of the EU's external digital policy while adhering to core data protection principles when transferring data outside the Union?