Medium1 markMultiple Choice
Domain 4.3: Design MigrationsMigrationComputeIaaS

AZ-305 · Question 01 · Domain 4.3: Design Migrations

CASE STUDY: Tailspin Toys

Tailspin Toys is a global manufacturing company with 50,000 employees across 30 countries. They currently operate a mix of on-premises infrastructure (500 servers 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. Network connectivity requires 10 Gbps throughput to Azure with <20ms latency. GDPR compliance mandates that EU customer data must remain in European Azure regions.

You need to design a migration strategy for the legacy Windows Server 2012 applications. The solution must minimize operational overhead and maintain compliance while ensuring the applications remain supported.

Which compute solution should you recommend?

Answer options:

A.

Azure App Service

B.

Azure Virtual Machines

C.

Azure Kubernetes Service (AKS)

D.

Azure Dedicated Host

How to approach this question

Identify the constraints: 'cannot be modified' rules out PaaS/Containers. 'Windows Server 2012' requires ESU for support.

Full Answer

B.Azure Virtual Machines✓ Correct
Azure Virtual Machines with Extended Security Updates (ESU)
Windows Server 2012 and 2012 R2 have reached the end of their support lifecycle. By migrating these workloads to Azure Virtual Machines (IaaS), organizations receive free Extended Security Updates (ESUs) for up to three years. This meets the requirement of keeping the apps supported without requiring code modifications.

Common mistakes

Candidates often choose PaaS (App Service) for modernization, ignoring the 'cannot be modified' constraint.

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