Microsoft Azure Solutions Architect Expert AZ-305 Practice Question
A media company needs to process thousands of high-resolution video files every night. The processing workflow runs a proprietary Windows executable that performs transcoding and watermarking. Requirements include:
The job must start on a schedule and complete within the nightly maintenance window.
Compute resources must automatically scale out during the run and deallocate afterward to minimize costs.
The solution should require minimal infrastructure management. Which Azure compute service should you recommend?
Azure Functions on a Consumption plan triggered by a timer
Azure Kubernetes Service with virtual-machine scale sets and a CronJob
Azure Container Apps using a scheduled job and KEDA-based autoscaling
Azure Batch with a Windows virtual-machine pool and automatic scaling
Azure Batch is purpose-built for large-scale parallel and high-performance computing workloads that need to run executables or scripts across pools of virtual machines. It supports Windows applications without requiring containerization, offers built-in job scheduling, handles automatic scaling of VM pools, and can automatically deallocate nodes when work is finished-minimizing cost and operational overhead.
Azure Container Apps now supports scheduled jobs and autoscaling, but the Windows executable would have to be packaged into a Windows container and the service is optimized for container workloads rather than distributing native executables across large VM pools, making it a less direct fit.
Azure Kubernetes Service could meet the technical needs with CronJobs and VM scale sets, but it introduces significant cluster management complexity and ongoing control-plane costs, conflicting with the minimal-management requirement.
Azure Functions on a Consumption plan is unsuitable because of its maximum execution-time limit (up to 10 minutes) and memory constraints, which are inadequate for lengthy, resource-intensive video processing.
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Microsoft Azure Solutions Architect Expert AZ-305
Design infrastructure solutions
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