AZ-204 Develop Azure compute solutions Practice Question
A long-running webhook processor must process thousands of independent files. The developer wants status tracking, checkpoints, and replay-safe orchestration. Which Azure Functions capability should be used?
⚠ Common exam trap
A common mix-up: candidates confuse a simple trigger (like Timer or Blob trigger) with the orchestration capabilities needed for stateful, long-running workflows, overlooking that Durable Functions provides the necessary checkpointing and replay safety.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Durable Functions orchestrator
Durable Functions orchestrator is correct because it provides built-in support for status tracking, checkpointing, and replay-safe orchestration via the Event Sourcing pattern. The orchestrator function automatically saves execution history to a storage table, enabling reliable resumption after crashes or restarts, which is essential for processing thousands of independent files with long-running workflows.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Blob lifecycle management
Why it's wrong here
Blob lifecycle management moves or deletes stored objects by age; it executes no processing logic, so it cannot track status, checkpoint, or orchestrate webhook work. It is tempting because the files live in storage, but Durable Functions supplies the stateful, replay-safe coordination the scenario needs.
- ✗
Timer trigger only
Why it's wrong here
A timer trigger fires on a schedule and provides no per-file status, checkpointing, or replay safety across thousands of independent items. It is tempting for simple recurring jobs, but the durable orchestration the scenario requires comes from Durable Functions, which persists state and supports replay.
- ✓
Durable Functions orchestrator
Why this is correct
Durable Functions orchestrator provides stateful workflow coordination through checkpointing and replay, directly satisfying the status tracking and replay-safe orchestration requirements. Its event-sourcing model persists each await to durable storage, so thousands of independent file tasks run reliably without losing progress after failures or restarts.
- ✗
Azure Policy remediation
Why it's wrong here
Azure Policy remediation corrects non-compliant resources against policy definitions; it cannot orchestrate file processing, maintain checkpoints, or replay failed runs. Durable Functions provide exactly that stateful orchestration. Remediation is tempting because it sounds like automated recovery, and it would be right for enforcing tagging or configuration compliance at scale.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
Go deeper
Related to this question
Learn chapter
Event Grid and Event Hubs
Key term
Azure Functions Bindings
Azure Functions Bindings are declarative connections that link your serverless function code to Azure services or external resources, handling input and output data automatically without writing extra networking or authentication code.
Key term
Durable Functions
Durable Functions is an extension of Azure Functions that lets you write stateful workflows in code, managing complex sequences of tasks, retries, and delays automatically.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-204 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-204 exam.