Services trade is the academic concept and research field focused on the international exchange of intangible products and activities across national borders, distinct from the trade in physical goods. It investigates the nature, patterns, determinants, and economic impacts of these transactions, analyzing the unique characteristics of services such as intangibility and the necessity of various modes of supply (including cross-border delivery, consumption abroad, commercial presence, and movement of natural persons) across diverse sectors including finance, education, tourism, and professional services. Its significance lies in understanding a major and growing component of the global economy, its complex relationship with goods trade and investment, and the distinct regulatory and policy challenges it presents within the context of international economic integration and trade agreements.