Diplomatic relations in the era of globalization play an important role in bridging communication between countries. Globalization, characterized by increased exchange of goods, services, and information, has strengthened relations between countries, but has also challenged traditional diplomatic structures. On the one hand, modern diplomacy is now easier with fast communication technology. On the other hand, complex issues such as climate change and cyber security require deeper international cooperation. One important aspect of diplomatic relations today is multilateralism. International organizations such as the UN, WTO, and ASEAN serve as platforms for countries to dialogue and negotiate. In this context, public diplomacy also emerges as an effective tool for building a positive image and increasing influence at the global level. Countries use social media and international campaigns to promote their culture and values. In the era of globalization, cross-border issues such as migration, terrorism and pandemics are increasingly urgent. Good diplomatic relations allow countries to overcome common challenges by sharing information and resources. For example, cooperation in dealing with COVID-19 refers to the importance of health diplomacy. Countries are helping each other in procuring vaccines and health technology, showing how interdependence is deepening. However, globalization also brings risks to diplomacy. Geopolitical conflicts, such as the rivalry between the US and China, show how national interests can interfere with international relations. The rise of nationalism and protectionism in some countries complicates multilateralism efforts. In this situation, negotiations become increasingly complicated and require more diplomatic skills. Civil society also plays a role in diplomatic relations in this era. Non-governmental organizations (NGOs) and the international community encourage transparency and accountability in foreign policy. Their participation in international dialogue often brings needed perspectives in dealing with global issues. Additionally, the use of technology, such as big data analysis, helps diplomats understand public opinion and design better communication strategies. The role of economic diplomacy is increasingly important in the era of globalization. The growth of international trade and foreign direct investment makes economic relations between countries key to stability and growth. FTAs (Free Trade Agreements) are used as a tool to facilitate economic relations, but are often accompanied by challenges related to human rights and the environment. Therefore, sustainability in diplomatic relations must also pay attention to social and environmental aspects. Overall, diplomatic relations in the era of globalization are determined by countries’ ability to adapt to change. Readiness to collaborate, innovation in diplomacy, and civil society involvement are key components in creating harmonious and productive international relations. Developing an inclusive and comprehensive diplomatic strategy will ensure continued global cohesion and stability.