AWS Technical Essentials Practice

The term "availability zone" in AWS refers to a distinct location within an AWS region. Each availability zone is made up of one or more data centers and is designed to be isolated from failures in other availability zones. By having multiple availability zones within a region, AWS allows users to architect their applications for high availability and fault tolerance. This means that if one availability zone experiences issues, applications running in other zones can continue to operate, thereby minimizing downtime and ensuring business continuity.

The concept of availability zones is crucial for users looking to deploy applications that require resilience and redundancy. By distributing resources across multiple zones, organizations can achieve better performance, reliability, and disaster recovery capabilities.