Diplomacy and diplomatic relations play a crucial role in the era of globalization, where interactions between countries are increasingly complex and interconnected. In this context, diplomacy functions as a tool to facilitate communication and negotiations between countries, in order to achieve common interests and resolve conflicts peacefully. In an era marked by the emergence of transnational issues such as climate change, terrorism and global health, multilateral diplomacy has become increasingly important. One important aspect of modern diplomacy is the use of information technology. Digital diplomacy is redefining the way countries interact. Through social media platforms and online communication, diplomacy can be carried out more quickly and efficiently. Countries are able to communicate directly with the international community, which increases transparency and accountability. Globalization also encourages the increasing role of international organizations. Forums such as the UN, WTO, and ASEAN are important arenas for negotiation and cooperation. Through these institutions, countries can align their policies, share information, and collectively address global challenges. Environmental diplomacy, for example, relies heavily on international cooperation to reach agreements on reducing emissions, preserving biodiversity and managing water resources. In a bilateral context, diplomatic relations between countries often focus on trade and investment. Increasing economic interdependence between countries creates the need for deeper cooperation, leading to the negotiation of free trade agreements and foreign direct investment. Countries seek to attract investment through business-friendly policies, creating conditions conducive to economic growth. Cultural diplomacy also plays a significant role in promoting values ​​and culture between countries. Through student exchanges, arts programs, and other cultural initiatives, countries can increase understanding and tolerance of one another. This approach is very important in overcoming xenophobia, identity politics and social tensions that often arise in this modern era. Global security issues also influence diplomatic dynamics. Transnational terrorism, forced migration and cybercrime require countries to work together to address these threats. Strategic alliances and defense agreements have become important tools for ensuring regional stability and security. As a challenge, globalization also creates obstacles to diplomacy. Political uncertainty, rising nationalism, and economic inequality can polarize international relations. Countries must adapt quickly to these changes to maintain constructive diplomatic relations. Overall, in the era of globalization, diplomacy and diplomatic relations are not only needed to maintain relations between countries, but also to face increasingly complex global challenges. Effective and inclusive diplomacy will be the key to creating a safer and more prosperous world.