Azure Interview Questions: What to Prepare for Microsoft Cloud Roles

Azure interviews have a distinct character compared to AWS or GCP. Microsoft’s cloud has deep roots in the enterprise market — financial services, government, healthcare systems, and large UK and EU corporations make up a significant portion of its customer base. If you’re interviewing for an Azure role, that enterprise context shapes what gets tested, and it means a few topics — particularly around identity — come up in almost every interview.

This guide covers who hires Azure engineers, which services are tested, 20 real questions with what interviewers are looking for, and how Azure concepts differ from their AWS equivalents.

Who Hires Azure Engineers#

Azure’s enterprise footprint is its defining characteristic. The organisations most likely to interview you for Azure roles are:

Financial services firms — Banks, insurance companies, and asset managers have heavy Microsoft presence, often going back decades of Windows Server, Active Directory, and SQL Server licensing. Azure is the natural cloud destination when they modernise.

Government and public sector — Many government departments and agencies use Azure, partly because of its compliance certifications, data residency options, and existing Microsoft licensing relationships. NHS trusts in the UK are a representative example.

Large UK and EU enterprises — Retailers, manufacturers, logistics companies, and utilities often run Azure because their on-premises estate is already Microsoft-based. The transition path is more natural than switching to a different vendor.

Microsoft Gold Partners and consultancies — System integrators like Accenture, Capgemini, Atos, and specialist Microsoft partners hire Azure engineers to serve client work.

Mid-size companies on Microsoft 365 — Businesses already paying for Microsoft 365 often extend into Azure because identity (Entra ID) is already there.

The enterprise-heavy customer base means Azure interviews tend to care about hybrid scenarios — connecting on-premises environments to Azure — and identity management more than AWS or GCP interviews typically do.

Core Azure Services You’ll Be Tested On#

Before getting into specific questions, here are the service areas that appear consistently in Azure interviews:

Azure Virtual Machines — Compute fundamentals, VM sizing, availability sets vs availability zones, VM scale sets, managed disks, and Azure Spot VMs.

Azure Storage — Blob storage tiers (Hot, Cool, Cold, Archive), Azure Files, Azure Queue Storage, storage account types, and replication options (LRS, ZRS, GRS).

Azure Active Directory / Microsoft Entra ID — Tenant structure, users and groups, app registrations, service principals, managed identities, conditional access, and hybrid identity with AD Connect. This is tested in almost every Azure interview because it underpins everything Microsoft builds.

Azure Networking — Virtual networks (VNets), subnets, Network Security Groups (NSGs), Azure Firewall, VNet peering, VPN Gateway, ExpressRoute, Application Gateway, and Azure Load Balancer.

Azure Kubernetes Service (AKS) — Node pools, pod identity, Azure CNI vs kubenet, integration with Azure Container Registry and Entra ID, and cluster autoscaler.

Azure Functions — Serverless compute, triggers and bindings, consumption plan vs premium plan, durable functions for stateful workflows.

Azure DevOps — Pipelines (YAML and classic), boards, repos, artifacts, and integration with GitHub Actions.

ARM Templates and Bicep — Infrastructure as code in the Azure ecosystem. Bicep is now the preferred authoring language. Expect questions on resource dependencies, modules, and deployment scopes.

Azure Monitor — Log Analytics workspaces, diagnostic settings, alerts, action groups, Application Insights, and Azure Advisor.

Why Azure Entra ID Is Almost Always Tested#

Microsoft Entra ID (formerly Azure Active Directory) is not just another service — it’s the identity backbone for Azure, Microsoft 365, and the entire Microsoft ecosystem. Nearly every Azure service uses it for authentication and authorisation.

When you grant a VM access to a Key Vault, you use a managed identity (an Entra ID concept). When you restrict access to an application, you use conditional access policies in Entra ID. When a company migrates from on-premises Active Directory, Entra Connect (formerly AD Connect) is the bridge.

Interviewers test Entra ID because:

  1. It’s central to secure design — a candidate who doesn’t understand service principals and managed identities will have significant gaps in any Azure role.
  2. It’s different from AWS IAM in ways that catch people off guard.
  3. Hybrid identity (on-prem AD + Azure) is a real-world scenario that comes up in most enterprise deployments.

20 Azure Interview Questions With What Interviewers Are Probing#

Foundational questions:

  1. “What is a resource group in Azure, and what are the rules around it?” Probing: Whether you know that a resource group is a logical container, that resources can be in different regions but still in the same group, that deleting a resource group deletes everything in it, and that access control can be assigned at the resource group level.

  2. “What’s the difference between a subscription and a management group in Azure?” Probing: Understanding of the Azure scope hierarchy — management group → subscription → resource group → resource.

  3. “Explain the difference between Azure AD (Entra ID) and on-premises Active Directory Domain Services.” Probing: Entra ID is a cloud-based identity service using different protocols (OAuth, OIDC, SAML) compared to on-premises AD DS which uses Kerberos and LDAP. They are not the same product.

  4. “What is a managed identity in Azure, and why would you use it instead of a service principal with a secret?” Probing: Understanding that managed identities eliminate the need to store credentials, that Azure manages the underlying certificate rotation, and that they come in system-assigned and user-assigned variants.

  5. “What is the difference between Network Security Groups and Azure Firewall?” Probing: NSGs are stateful packet filters applied at the subnet or NIC level. Azure Firewall is a managed, stateful firewall service with more capabilities (FQDN filtering, threat intelligence, centralised policy management). Both serve different purposes and are often used together.

Identity and access questions:

  1. “A developer says they can’t access a blob in a storage account. Walk me through how you’d diagnose the issue.” Probing: Methodical thinking — checking RBAC assignments, checking whether the storage account has public access disabled, checking network rules (private endpoints or service endpoints), checking the storage account key vs Entra ID authentication setting.

  2. “What is Privileged Identity Management (PIM) and why would an enterprise use it?” Probing: PIM provides just-in-time privileged access — users activate roles only when needed, for a limited time, often with approval and MFA requirements. This limits the window of exposure if an account is compromised.

  3. “What is conditional access in Entra ID?” Probing: Policies that evaluate signals (user, location, device compliance, application, risk level) and enforce controls (require MFA, block access, require compliant device). A cornerstone of Zero Trust architecture on Azure.

Networking questions:

  1. “What is VNet peering, and what are its limitations?” Probing: VNet peering connects two VNets so resources can communicate via Microsoft’s backbone. Limitations include: peering is not transitive (A-B and B-C peered does not mean A-C can communicate without a hub or explicit peering), and IP ranges must not overlap.

  2. “What is the difference between a VPN Gateway and ExpressRoute?” Probing: VPN Gateway provides an encrypted IPsec connection over the public internet. ExpressRoute is a private, dedicated circuit to Azure bypassing the internet, offering more consistent performance and lower latency. ExpressRoute is significantly more expensive.

  3. “Where would you place a web app, an application tier, and a database in a VNet, and why?” Probing: Web-facing tier in a subnet behind Application Gateway. Application tier in a private subnet. Database in a separate private subnet with the most restrictive NSG rules. Understanding of network segmentation.

Infrastructure and DevOps questions:

  1. “What is Bicep, and how does it relate to ARM templates?” Probing: Bicep is a domain-specific language that compiles to ARM template JSON. It’s easier to read and write, supports modules, and is the recommended approach for Azure IaC. The compiled ARM template is what Azure actually deploys.

  2. “How would you implement a CI/CD pipeline for an AKS workload using Azure DevOps?” Probing: Image build → push to Azure Container Registry → pipeline triggers on push → deploys to AKS using kubectl or Helm → environment approvals for production promotion.

  3. “What are availability zones in Azure, and how do they differ from availability sets?” Probing: Availability zones are physically separate datacentres within a region with independent power, cooling, and networking. Availability sets are a legacy mechanism for spreading VMs across fault and update domains within a single datacentre. Zones provide stronger isolation guarantees.

Hybrid and migration questions:

  1. “A company is moving their on-premises Active Directory to the cloud — how would you use Azure to support this?” Probing: This is a multi-part scenario. A strong answer distinguishes between several patterns: (a) Entra Connect sync — extend on-prem AD identities into Entra ID for cloud apps without migrating AD DS; (b) Azure AD DS — a managed Active Directory Domain Services in Azure, useful for lift-and-shift workloads needing LDAP/Kerberos; (c) full migration — gradually moving workloads and users to cloud-native identity over time. Most real enterprises start with Entra Connect, which enables single sign-on and hybrid coexistence. The interviewer wants to see you can distinguish between these options and ask clarifying questions about what the company actually needs.

  2. “What is Azure Arc, and when would you use it?” Probing: Azure Arc extends Azure management to on-premises, multi-cloud, and edge infrastructure. You can manage non-Azure servers, Kubernetes clusters, and databases through Azure Resource Manager. Useful for organisations that can’t move everything to Azure but want unified management.

Cost and monitoring questions:

  1. “How would you monitor a production AKS cluster for performance issues?” Probing: Container Insights with Log Analytics, Prometheus and Grafana (now native in Azure Monitor), alerts on node CPU/memory, pod restart loops, and HPA metrics.

  2. “What is Azure Advisor?” Probing: A built-in tool that analyses your Azure usage and recommends improvements across five categories: cost, security, reliability, performance, and operational excellence. It’s how Azure surfaces under-utilised resources and known misconfigurations.

  3. “A storage account is generating unexpectedly high costs. How do you investigate?” Probing: Check Cost Analysis in Azure Cost Management, check which access tier blobs are stored in (large amounts in Hot tier that should be Cool or Archive), check for egress charges (data transfer out of Azure is charged), check for replication costs (GRS is more expensive than LRS).

Scenario question:

  1. “You’re asked to deploy a new web application on Azure that handles sensitive customer data. Walk me through the key decisions you’d make.” Probing: This is a design question. Strong answers cover: private networking (no public IPs on app or database tiers), Entra ID for application authentication, Key Vault for secrets and certificates, storage encryption with customer-managed keys if required, Azure Defender for the relevant services, logging to Log Analytics, and deployment via Bicep in a pipeline with environment separation.

How Azure Concepts Differ From AWS#

If you’re coming from AWS, a few Azure concepts will catch you out:

Resource groups vs AWS accounts — AWS uses accounts as the primary isolation boundary. In Azure, subscriptions are the billing and access boundary, but resource groups are how you organise and manage resources operationally. Governance happens at the management group and subscription level, not inside a resource group.

Azure Entra ID vs AWS IAM — AWS IAM controls access to AWS resources using policies attached to users, roles, and groups within an account. Entra ID is a full identity provider — it manages users across Microsoft 365, Azure, and third-party apps using OAuth and SAML. AWS IAM doesn’t manage users in the same way; that’s closer to AWS IAM Identity Center (formerly SSO).

Bicep vs CloudFormation/Terraform — CloudFormation is AWS-native IaC using JSON or YAML. Bicep is Azure-native and compiles to ARM JSON. Terraform works across both. Bicep is Azure’s recommended first-party IaC tool, while many teams use Terraform for multi-cloud flexibility.

NSGs vs Security Groups and NACLs — AWS has both security groups (stateful, per instance) and network ACLs (stateless, per subnet). Azure NSGs are stateful and can be applied to subnets or individual NICs, combining aspects of both AWS concepts.

What Azure Certifications Signal#

AZ-900 (Azure Fundamentals) — Signals foundational awareness. Fine for someone early in their career, but not a differentiator for experienced roles. Interviewers expect you to know everything on AZ-900 without mentioning it.

AZ-104 (Azure Administrator) — The most relevant certification for cloud engineer roles. Covers VMs, storage, networking, identity, and monitoring across the service areas interviewers test. A candidate with AZ-104 signals genuine hands-on familiarity with Azure infrastructure.

AZ-305 (Azure Solutions Architect Expert) — A senior-level certification that signals architecture-level thinking. Relevant for roles that involve designing solutions, not just implementing them. Often combined with AZ-104 (a prerequisite path). Having AZ-305 shifts interview conversations toward design discussions rather than service-level questions.

Certifications without hands-on experience are noticeable. Interviewers can tell the difference between someone who passed a certification and someone who’s built things in Azure. The certifications open doors; the practical knowledge is what carries interviews.

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