AWS global infrastructure is a network of secure data centers distributed worldwide, designed to provide high availability, low latency, and scalability.

The two most important terms in AWS global infrastructure are Regions (geographical areas) and Availability Zones (isolated data center locations within a region).

AWS global infrastructure is used to deploy applications close to end-users globally, ensuring low latency, high availability, and built-in fault tolerance.

Regions are connected to enable data replication, global load balancing, and seamless disaster recovery across different geographic locations.

Availability Zones support regions by providing physically separated, redundant data centers that keep applications running smoothly even if one zone fails.