Q: **CASE STUDY: Contoso Manufacturing** **Overview:** Contoso Ltd is a global manufacturing company with 50,000 employees across 30 countries. They currently operate a mix of on-premises infrastructure (500 VMware VMs across 5 data centers) and Azure (20 subscriptions with 100+ VMs and various PaaS services). Their annual IT budget is $50 million, with plans to migrate 70% of workloads to Azure within 2 years. **Business Requirements:** The company needs to reduce IT costs by 30%, improve disaster recovery (current RTO: 24 hours -> target: 2 hours), enhance security posture to meet ISO 27001 and SOC 2 compliance, and enable remote work for 80% of employees. All solutions must support future growth of 20% annually. **Technical Constraints:** Some legacy applications cannot be modified and must run on Windows Server 2012 R2. Network connectivity requires 10 Gbps throughput to Azure with <20ms latency. GDPR compliance mandates that EU customer data must remain in European Azure regions. **Question:** To meet the 10 Gbps throughput and <20ms latency requirement for the hybrid connection between the on-premises data centers and Azure, which connectivity solution MUST Contoso implement?

Identify the hybrid networking service that provides dedicated, high-bandwidth, low-latency connections.

Q: What mistakes do candidates make on this AZ-305 question?

Choosing VPN Gateway. While high-end VPN gateways can technically reach 10 Gbps, they cannot guarantee the strict <20ms latency requirement because they rely on the public internet.

Question 1

**CASE STUDY: Contoso Manufacturing**

**Overview:** Contoso Ltd is a global manufacturing company with 50,000 employees across 30 countries. They currently operate a mix of on-premises infrastructure (500 VMware VMs across 5 data centers) and Azure (20 subscriptions with 100+ VMs and various PaaS services). Their annual IT budget is $50 million, with plans to migrate 70% of workloads to Azure within 2 years.

**Business Requirements:** The company needs to reduce IT costs by 30%, improve disaster recovery (current RTO: 24 hours -> target: 2 hours), enhance security posture to meet ISO 27001 and SOC 2 compliance, and enable remote work for 80% of employees. All solutions must support future growth of 20% annually.

**Technical Constraints:** Some legacy applications cannot be modified and must run on Windows Server 2012 R2. Network connectivity requires 10 Gbps throughput to Azure with <20ms latency. GDPR compliance mandates that EU customer data must remain in European Azure regions.

**Question:**
To meet the 10 Gbps throughput and <20ms latency requirement for the hybrid connection between the on-premises data centers and Azure, which connectivity solution MUST Contoso implement?

Accepted Answer

Identify the hybrid networking service that provides dedicated, high-bandwidth, low-latency connections.

Question 2

What mistakes do candidates make on this AZ-305 question?

Accepted Answer

Choosing VPN Gateway. While high-end VPN gateways can technically reach 10 Gbps, they cannot guarantee the strict <20ms latency requirement because they rely on the public internet.

How to approach this question

Full Answer

Common mistakes

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