AZ-400 Practice Question: Design and implement build and release pipelines
Which TWO benefits does using deployment groups provide in Azure Pipelines? (Choose two.)
⚠ Common exam trap
It's easy for candidates to confuse deployment groups with environment-level approvals or think they are exclusive to classic pipelines, but deployment groups are a flexible agent-based targeting mechanism that works across both classic and YAML pipelines.
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
✓
You can deploy to a specific set of target servers (e.g., all web servers in a farm).
Deployment groups in Azure Pipelines allow you to define a logical set of target machines (e.g., all web servers in a farm) and deploy to them collectively. This enables targeted, multi-machine deployments without needing to manage individual agents per environment. Option B is correct because deployment groups support rolling deployments with built-in health validation, where the pipeline can monitor application health after each batch of updates and automatically roll back on failure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
You can deploy to a specific set of target servers (e.g., all web servers in a farm).
Why this is correct
Deployment groups allow you to define a logical set of target machines that share the same deployment role, such as all web servers in a farm. This enables precise, scoped deployments to specific servers within an environment, rather than deploying to an entire pool arbitrarily.
- ✓
They enable rolling deployments with health validation.
Why this is correct
Deployment groups support rolling deployment strategies, where the deployment is applied incrementally to subsets of machines in the group. Health validation can be performed after each iteration to detect issues before proceeding to the next set, reducing risk and downtime.
- ✗
You can assign multiple deployment groups to a single agent.
Why it's wrong here
An agent is registered to exactly one deployment group at a time; you cannot assign multiple deployment groups to a single agent. If you need to target machines in different groups, register separate agents or use machine-level targeting within a single group.
- ✗
Each target server must have its own agent.
Why it's wrong here
While each deployment group target machine typically requires an agent, a single agent can be installed on a machine and target multiple servers if those servers are accessible. However, the statement that each target server must have its own agent is incorrect; an agent can manage multiple servers as long as it has network access and appropriate configurations.
- ✗
Deployment groups can only be used with classic release pipelines.
Why it's wrong here
Deployment groups are not limited to classic release pipelines; they can be used in YAML pipelines as well. Azure DevOps supports deployment group jobs in both classic and YAML pipeline definitions, providing flexibility in automation.
Go deeper
Related to this question
Learn chapter
Introduction to DevOps and Azure DevOps
Key term
Pipeline
A pipeline is an automated series of steps that takes code from development to production, ensuring quality and speed.
Key term
Environment
An environment is a dedicated set of computing resources, configurations, and services used to develop, test, or host software applications in a controlled and repeatable way.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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