Example Concept: Multi-region high-availability architectures typically use active-active or active-passive configurations. In active-active setups, traffic is distributed across multiple regions using global load balancers, ensuring that if one region fails, others can handle the load. Active-passive configurations involve a primary region handling all traffic, with a secondary region on standby, ready to take over if the primary fails. Data replication and synchronization are crucial, often achieved through services like AWS Global Accelerator, Azure Traffic Manager, or GCP Cloud Load Balancing, combined with database replication technologies.