Regional integration is a process in which states enter into a regional agreement in order to enhance regional cooperation through regional institutions and rules. The objectives of the agreement could range from economic to political, although it has generally become a political economy initiative where commercial purposes are the means to achieve broader socio-political and security objectives. It could be organized either on a supranational or an intergovernmental decision-making institutional order, or a combination of both.

Past efforts at regional integration have often focused on removing barriers to free trade in the region, increasing the free movement of people, labour, goods, and capital across national borders, reducing the possibility of regional armed conflict (for example, through Confidence and Security-Building Measures), and adopting cohesive regional stances on policy issues, such as the environment, climate change and migration.

Intra-regional trade refers to trade which focuses on economic exchange primarily between countries of the same region or economic zone. In recent years countries among economic-trade regimes such as ASEAN in South-East-Asia for example have increased their level of trade and commodity exchange between themselves which reduces the inflation and tariff barriers associated with foreign markets resulting in growing prosperity.