Regional Integration is a process in which neighboring countries enter into an agreement in order to upgrade cooperation through common institutions and rules. The objectives of the agreement could range from economic to political to environmental, although it has typically taken the form of a political economy initiative where commercial interests are the focus for achieving broader socio-political and security objectives, as defined by national governments. Regional integration has been organized either via supranational institutional structures or through intergovernmental decision-making, 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 within economic-trade regimes such as ASEAN in Southeast Asia for example have increased the level of trade and commodity exchange between themselves which reduces the inflation and tariff barriers associated with foreign markets resulting in growing prosperity.