Medical Affairs (MA) plays a pivotal role in pharmaceutical organizations by ensuring scientific integrity, compliance, and engagement with key stakeholders. The core activities include scientific communication, medical education, real-world evidence generation, and strategic regulatory alignment. Medical Affairs professionals engage with key external experts (KEEs), medical societies, and patient advocacy groups to gather insights and promote evidence-based medicine. Digital health and telemedicine are emerging as key tools for Medical Affairs to enhance engagement, while compliance and risk management remain central to ethical pharmaceutical practices. Additionally, Medical Affairs is essential in demonstrating the economic value of new therapies, supporting health economics, and market access strategies.