Microsoft Azure Architect Technologies (AZ-300) 2025 – 400 Free Practice Questions to Pass the Exam

The primary purpose of an availability zone in Azure is to create redundancy and ensure high availability. Availability zones are physically separate data centers within an Azure region, each with its independent power, cooling, and networking. This physical separation protects applications and data from datacenter-level failures. By deploying resources across multiple availability zones, organizations can ensure that their applications remain available even if one zone experiences an outage. This architecture allows for improved fault tolerance and disaster recovery, which are essential for mission-critical applications that require consistent uptime.

The other options focus on different aspects of cloud services. Reducing latency for global users pertains to strategies involving content delivery networks or geographically distributed resources, which are not the main purpose of availability zones. Increasing storage capacity relates to Azure's storage offerings and scaling capabilities, while enhancing data encryption primarily concerns security measures for data at rest or in transit rather than infrastructure availability. Thus, option A captures the core function of availability zones in Azure effectively.