Microsoft Certified: Azure Fundamentals (AZ-900) 2026 – 400 Free Practice Questions to Pass the Exam

The Load Balancer is designed to evenly distribute incoming service requests across multiple instances, ensuring that no single instance becomes overloaded while others remain idle. This capability is essential for maintaining high availability and reliability of applications, particularly when deployed across different Availability Zones. By efficiently managing traffic distribution, the Load Balancer helps to enhance the overall performance and resilience of applications.

The Load Balancer operates by routing user requests based on various protocols and load distribution algorithms, which can also include options like round-robin or least connections. This ensures that as demand fluctuates, the service remains accessible and responsive, minimizing potential downtime or performance bottlenecks.

While other options like the Application Gateway and Web Application Firewall do contribute to specific network-related functions, they do not focus primarily on balancing loads across instances in the same way the Load Balancer does. The Content Delivery Network (CDN), on the other hand, primarily caches content at various edge locations to reduce latency and improve delivery speed rather than managing traffic among multiple instances directly. Thus, the Load Balancer is the correct choice when considering the need to evenly distribute service requests across different Availability Zones.