Microsoft Azure Fundamentals (AZ-900)Describe Azure architecture and servicesMedium
A financial institution is migrating its on-premises data center to Azure. They require a dedicated, private, and high-bandwidth network connection with guaranteed uptime and predictable latency between their on-premises network and Azure. Which Azure service should they implement?
- AAzure Load Balancer
- BAzure VPN Gateway
- CAzure Virtual Network (VNet)
- DAzure ExpressRoute
Show answer & explanationAnswer & explanation
Correct answer: D. Azure ExpressRoute
Azure ExpressRoute provides a private, dedicated, high-bandwidth connection between your on-premises data centers and Azure. Unlike VPN over the public internet, ExpressRoute offers guaranteed uptime, predictable latency, and higher throughput, making it ideal for critical enterprise workloads.
Why the other options are wrong
- A. Azure Load Balancer distributes incoming network traffic across multiple backend resources and is not used for establishing dedicated connectivity to on-premises networks.
- B. Azure VPN Gateway establishes secure connections over the public internet, which does not guarantee predictable latency or dedicated bandwidth.
- C. Azure Virtual Network (VNet) creates a private network in Azure but doesn't provide a dedicated connection from on-premises to Azure.
Azure ExpressRoute
A service that provides a private, dedicated, high-bandwidth network connection between your on-premises infrastructure and Azure data centers.
- Private connection (not over public internet)
- High bandwidth and predictable latency
- Guaranteed uptime
- Bypass public internet limitations
Memory trick: ExpressRoute is the private, fast lane to the cloud.