International trade is growing rapidly thanks to technological advancements, but challenges arise from differences in legal and cultural systems between countries. An understanding of the applicable laws in each country is essential to ensure smooth transactions and effective dispute resolution. Although free trade is increasingly accepted, barriers such as protectionism and tariffs are still significant challenges. Therefore, an understanding of international regulations is indispensable to reduce risks in global business. This study uses a qualitative approach with literature research methods or literature studies, which rely on literature as the main data source. The formulation of the problems raised in this study includes the role of international business law in ensuring legal certainty for interstate business actors, challenges faced related to differences in legal systems between countries, international business dispute resolution mechanisms, and the influence of international business law on cross-border digital trade regulations. The results show that the principle of freedom of contract in international trade needs to be balanced with fairness and compliance with national and international laws to protect the weaker parties. Challenge globalization, such as differences in legal systems and culture, culture, demands international cooperation. Besides that law Business play role crucial deep international organize digital trade, with a focus on harmonization Regulation, Personal Data Protection 3, and compliance with taxes and intellectual property rights to ensure fair and sustainable trade