Microsoft Azure Interview Questions for 10 Years Experience
40 questions with answers for candidates with 10+ years of experience — 11 medium, 29 hard.
What interviewers expect: 10 years experience
At ten years, roles are principal architect, cloud practice head or engineering manager. Expect discussions on cloud strategy, multi-cloud and hybrid with Azure Arc, operating models, team building, vendor and client management and long-term cost and risk. Technical depth still matters, but the focus is on decisions, business impact and leading large transformations.
This set is weighted towards DevOps and Infrastructure as Code (8), Azure Compute (7), Identity and Security (6), Azure Networking (5).
Cloud strategy and operating model Multi-cloud and hybrid Leadership and hiring Business case and risk
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01
Your pipeline takes 40 minutes. How do you speed it up?
Profile which stages are slow. Cache dependencies like NuGet or npm packages, run unit tests and linting in parallel jobs, and split slow integration tests to run only on main or nightly. Use self-hosted or Managed DevOps Pools agents with warm caches for big builds, build container images with layer caching, and deploy only changed services in a monorepo using path filters.
02
Your secure score in Defender for Cloud is low. How do you improve it?
Sort recommendations by the score increase and effort. Typical quick wins are enabling MFA for all privileged accounts, restricting management ports with just-in-time access, enabling endpoint protection and vulnerability assessment on VMs, and turning on diagnostic logs. Use Azure Policy to enforce fixes so new resources stay compliant. Assign owners and due dates through governance rules and track progress weekly.
03
Your company is choosing between Bicep and Terraform for its Azure estate. What would you recommend?
Bicep is Azure-only, needs no state file, supports new resource features immediately and has native what-if previews. Terraform works across many clouds and SaaS providers, has a huge module ecosystem, and keeps a state file that must be stored securely, for example in a Blob Storage backend with locking. Choose Bicep for Azure-only teams and Terraform for multi-cloud or existing Terraform skills.
04
How do you plan IP address space for VNets in an enterprise?
Allocate from a central IP plan that does not overlap with on-premises, other clouds or future acquisitions, because overlapping ranges cannot be peered or routed. Give each region a large block, for example 10.10.0.0/14, then carve /22 or /24 spokes. Size subnets for growth and remember AKS, App Gateway and private endpoints consume many IPs. Document allocations in an IPAM tool such as Azure Virtual Network Manager IPAM.
05
Design storage for an app storing user documents that must stay in India for 7 years.
Use a storage account in Central India with ZRS, or GZRS paired with South India which keeps data inside India. Apply time-based immutability for seven years on the archive container and lifecycle rules to move older files to Cool and Archive tiers. Encrypt with customer-managed keys in Key Vault if compliance asks, use private endpoints, and log access to Log Analytics for audits.
06
Write an Azure Pipelines YAML that builds a .NET app and deploys it to App Service.
Put Azure Front Door Premium or Application Gateway with WAF in front of the app, using the managed Default Rule Set based on OWASP plus bot protection and rate limits. Enable Azure DDoS Network Protection on the VNet for layer 3 and 4 attacks on public IPs. Lock the app so it accepts traffic only from Front Door, using access restrictions with the service tag and the Front Door ID header.
Peering connects two VNets over the Microsoft backbone with low latency, either in the same region or globally. Traffic stays private and is billed per GB. Peering is not transitive: if A peers with B and B peers with C, A cannot reach C. To route through a hub, use a network virtual appliance or Azure Firewall with user-defined routes, or use Azure Virtual WAN.
09
How do you decide between IaaS and PaaS for migrating an on-premises application?
Start with constraints. If the app needs OS-level access, custom drivers or legacy software, a lift-and-shift to VMs is fastest. If it is a standard .NET, Java or Node web app with SQL Server, App Service plus Azure SQL removes patching and gives built-in scaling. Many teams lift and shift first to meet a datacenter exit date, then modernise to PaaS in a later phase.
Situation: three freshers joined my team without pipeline experience. Task: make them productive in a month. Action: I created a small sample repo with a Bicep template and YAML pipeline, paired with each one on their first pull request, set review checklists and let them own one non-production pipeline each. Result: within five weeks all three were shipping changes independently and one improved our caching.
11
Someone changed production resources manually in the portal. How do you detect and handle drift?
Detect drift by running Bicep what-if or terraform plan on a schedule and failing the run on unexpected differences, and by alerting on activity log write events from users rather than pipeline identities. Decide whether the manual change was a valid hotfix; if so, add it to code, otherwise redeploy to restore. Then reduce write access in production to the pipeline identity plus PIM break-glass.
12
How do you manage secrets and configuration for many environments in pipelines?
Keep non-secret settings in parameter files or Azure App Configuration per environment. Keep secrets in Key Vault per environment and let apps read them via managed identity or Key Vault references, so pipelines rarely handle them. When pipelines need secrets, link variable groups to Key Vault and use environment approvals. Never echo secrets in logs and prefer federated identities over stored credentials.
13
You need to run a nightly 3-hour data processing job cheaply. Which compute would you choose?
Avoid the old Consumption plan because of its execution timeout. Good options are Azure Batch or a VM Scale Set using Spot VMs with checkpointing, Container Apps jobs that run on a schedule and stop afterwards, or Durable Functions breaking work into short activities. The key is paying only while the job runs and tolerating restarts. Store input and output in Blob Storage so any worker can resume.
14
Design identity and access for a multi-team Azure platform in a bank.
Use Entra ID groups mapped to roles per team and environment, with no direct user assignments. Make production access eligible-only through PIM with approval and MFA, and require phishing-resistant MFA and compliant devices via Conditional Access. Use managed identities and workload federation for apps and pipelines. Keep break-glass accounts excluded from policies but monitored. Run quarterly access reviews and stream logs to Sentinel.
15
What is the Hyperscale tier of Azure SQL Database?
Hyperscale separates compute from a distributed, log-based storage layer, so databases can grow up to 128 TB with fast backups through snapshots and quick restores regardless of size. You can add up to four high-availability replicas and named replicas for read scale-out. Scaling compute takes minutes. It suits large OLTP and mixed workloads, and its pricing is now competitive with General Purpose.
16
A developer's service principal secret was committed to a public GitHub repo. What do you do?
Treat it as compromised. Immediately delete the secret on the app registration and create a new one only if needed, then update the pipeline. Check Entra sign-in logs for service principal sign-ins and the activity log for changes made with it, and remove anything suspicious. Purge it from Git history. Long term, move pipelines to workload identity federation so no secret exists to leak.
17
Design a disaster recovery plan for a VM-based application in Central India.
Agree RPO and RTO with the business. Replicate VMs to South India with Azure Site Recovery, configure recovery plans that start the database first, then app and web tiers, and pre-create the network. Use Traffic Manager or Front Door for DNS failover. Back up data separately with Azure Backup in case of corruption. Run test failovers into an isolated VNet every quarter.
18
What are RPO and RTO and how do they guide Azure designs?
RPO, recovery point objective, is the maximum acceptable data loss measured in time. RTO, recovery time objective, is how long recovery may take. A daily backup gives an RPO of up to 24 hours. Site Recovery gives an RPO of seconds to minutes and an RTO of minutes to hours. SQL failover groups give an RPO of seconds. Lower RPO and RTO cost more, so agree targets per application.
19
Tell me about a time you led a migration of workloads to Azure.
Situation: our company had to exit a leased datacenter in nine months with 120 VMs. Task: lead the compute migration. Action: I ran Azure Migrate assessments, grouped VMs by dependency into waves, rehosted most with Azure Migrate and moved web apps to App Service, with rollback plans for each wave. Result: we finished a month early and cut monthly run cost by about 25% after right-sizing.
GitOps treats a Git repository as the single source of truth for cluster configuration. An agent in the cluster, such as Flux, which AKS offers as a managed extension, or Argo CD, pulls manifests from Git and reconciles the cluster to match. Changes happen only through pull requests, which gives audit history and easy rollback by reverting commits. It also removes the need to give pipelines cluster admin credentials.
It is Microsoft's guidance for building quality workloads, organised into five pillars: reliability, security, cost optimization, operational excellence and performance efficiency. Each pillar has design principles, checklists and trade-offs. Azure Advisor and the Well-Architected Review tool score workloads against it. In design interviews, structure answers by pillar to show you considered failure, security and cost, not only features.
22
How do you design monitoring for a production microservices app on AKS?
Enable Container Insights and Managed Prometheus with Managed Grafana for cluster and pod metrics. Instrument services with OpenTelemetry sending to Application Insights for distributed tracing. Send logs to a central Log Analytics workspace using cheaper table plans for verbose logs. Define SLOs for latency and error rate, alert on them through action groups and build dashboards and runbooks for common failures.
23
Design a highly available web tier for an e-commerce site during a festival sale.
Run the app on App Service Premium v3 or a VM Scale Set spread across three availability zones in Central India. Put Azure Front Door in front for global load balancing, WAF and caching of static content, with a secondary region on standby. Pre-scale before the sale using scheduled rules, add Redis for sessions and catalogue caching, and load test with Azure Load Testing beforehand.
24
What is Durable Functions and what patterns does it support?
Durable Functions is an extension that lets you write stateful workflows in code. An orchestrator function calls activity functions, and the framework checkpoints state to storage so it survives restarts. Patterns include function chaining, fan-out/fan-in, async HTTP APIs with status polling, monitors and human interaction with timeouts. Orchestrator code must be deterministic, so avoid DateTime.Now or random values inside it.
Pick a property with high cardinality that spreads requests and storage evenly and that most queries filter on, such as userId or tenantId. Each logical partition is limited to 20 GB, so avoid keys like country or status that create hot partitions. If no single property works, use a synthetic key or hierarchical partition keys. The partition key cannot be changed later without migrating data.
The hub VNet holds shared services: Azure Firewall, VPN or ExpressRoute gateways, Bastion and DNS resolvers. Each workload gets its own spoke VNet peered to the hub, with UDRs sending traffic through the firewall. This centralises security and connectivity while isolating workloads. For many regions and branches, Azure Virtual WAN provides a Microsoft-managed hub with automatic transit routing.
27
Your Log Analytics bill is very high. How do you reduce it?
Run the usage query on the Usage table to see which tables and resources ingest most. Remove debug or duplicate logs at the source, use data collection rules with transformations to drop columns or filter rows, and move verbose tables to Basic or Auxiliary plans. Set a daily cap for non-production workspaces, shorten interactive retention and use commitment tiers if ingestion is steady above 100 GB per day.
28
What are active geo-replication and failover groups?
Active geo-replication creates readable secondary databases in other regions, up to four, with asynchronous replication and manual failover per database. Failover groups manage a group of databases together, provide read-write and read-only listener endpoints that stay the same after failover, and support automatic failover by policy. Applications should use the failover group listener so connection strings do not change during a regional failover.
Defender for Cloud is a cloud security posture management and workload protection platform. The free foundational tier gives a secure score and recommendations based on the Microsoft cloud security benchmark. Paid Defender plans add threat detection for servers, storage, SQL, containers, Key Vault and App Service, vulnerability scanning and attack path analysis. It also covers AWS and GCP accounts and on-premises servers through Arc.
Workload identity federation lets external workloads such as GitHub Actions, Kubernetes pods or other clouds get Entra ID tokens by exchanging their own OIDC tokens, without storing client secrets. You add a federated credential on an app registration or user-assigned managed identity that trusts a specific issuer and subject, such as a repo branch. AKS Workload ID uses this for pods to access Azure resources.
31
How does encryption at rest and in transit work in Azure?
All Azure Storage, managed disks and Azure SQL data is encrypted at rest with AES-256 by default using Microsoft-managed keys. You can switch to customer-managed keys in Key Vault for control over rotation and revocation, and use double encryption or confidential computing for stricter needs. In transit, services use TLS 1.2 or higher, and you should enforce HTTPS only and minimum TLS version settings.
32
How would you upgrade an AKS cluster in production with minimal downtime?
Check the release notes and API deprecations, then upgrade a non-prod cluster first. Set Pod Disruption Budgets and multiple replicas so draining is safe. Upgrade the control plane, then node pools one at a time using max surge so new nodes join before old ones drain. Use planned maintenance windows and auto-upgrade channels for patches. For major risk, run a blue-green cluster and switch traffic.
33
How would you structure IaC repositories for a platform team supporting 30 app teams?
Separate a platform repo for landing zone, networking and policies from shared versioned modules published to a Bicep registry in ACR or a Terraform module registry. App teams consume modules in their own repos with pinned versions. Use pull request checks: linting, what-if or plan, policy tests and security scanning with tools like Checkov or PSRule. Document module contracts and use semantic versioning for breaking changes.
34
How would you set up a landing zone for a company moving to Azure?
Follow the Cloud Adoption Framework landing zone design. Create a management group hierarchy (platform, landing zones, sandbox, decommissioned), separate subscriptions for identity, management and connectivity, and a hub-spoke or Virtual WAN network. Apply Azure Policy for allowed regions, tagging and diagnostics, and assign RBAC through Entra groups. Deploy it all as code with Bicep or Terraform so new app subscriptions can be vended consistently.
35
How would you protect storage accounts against ransomware?
Combine prevention and recovery. Use private endpoints, disable shared keys and public access, and restrict RBAC with PIM. Enable soft delete, versioning, change feed and point-in-time restore. For critical data, use immutable storage policies or vaulted Azure Backup with immutability and multi-user authorization so attackers cannot delete backups. Turn on Defender for Storage to detect malware uploads and unusual access.
36
Your company needs a reliable private link from its Pune datacenter to Azure. What do you propose?
Propose ExpressRoute through a provider at the Pune or Mumbai peering location with private peering into a hub VNet in Central India, sized for current and forecast bandwidth. Add a site-to-site VPN as a failover path, or a second ExpressRoute circuit at another peering location for higher resilience. Use BGP for route exchange, and encrypt traffic with MACsec or IPsec if compliance requires.
37
How do you enforce governance across 50 subscriptions?
Organise subscriptions under management groups and assign initiatives at the top: allowed regions, required tags, diagnostics, no public IPs in corp zones, Defender plans on. Use deny for critical rules and audit for the rest, with exemptions tracked. Deploy policy as code from a repo. Report compliance and secure score monthly, and use Resource Graph for inventory and cost dashboards across all subscriptions.
38
Your team of four engineers must run 12 containerised microservices. Would you choose AKS or Azure Container Apps?
AKS gives full Kubernetes: custom operators, service meshes, node pool control and any Helm chart, but you own upgrades and cluster operations. Container Apps is serverless containers built on Kubernetes, KEDA and Envoy, with scale to zero, revisions, traffic splitting and Dapr, without exposing the Kubernetes API. Pick Container Apps for microservices and APIs with a small ops team, and AKS when you need deep platform control.
39
How do you migrate 200 TB of on-premises data to Azure when the internet link is slow?
Calculate transfer time first: 200 TB over a 1 Gbps link at 70% efficiency takes almost a month. Use Azure Data Box devices shipped to your site, copy data locally and send them back for upload into the storage account. Then run AzCopy or Azure File Sync to sync the changes made after shipping. For ongoing large flows, consider ExpressRoute.
40
Write the commands to create an AKS cluster with a system and a user node pool.
Create the cluster with Azure CNI overlay and the system pool across zones, then add a user pool for apps:
az aks create -g rg-aks-prod -n aks-prod \
--network-plugin azure --network-plugin-mode overlay \
--nodepool-name system --node-count 3 --zones 1 2 3 \
--enable-managed-identity --attach-acr acrshopprod \
--generate-ssh-keys
az aks nodepool add -g rg-aks-prod --cluster-name aks-prod \
-n apps --mode User --node-count 3 --zones 1 2 3 \
--enable-cluster-autoscaler --min-count 3 --max-count 10
Frequently asked questions
What is asked in Microsoft Azure interviews for 10+ years of experience?
At ten years, roles are principal architect, cloud practice head or engineering manager. Expect discussions on cloud strategy, multi-cloud and hybrid with Azure Arc, operating models, team building, vendor and client management and long-term cost and risk. Technical depth still matters, but the focus is on decisions, business impact and leading large transformations.
How many questions should I practise before a Microsoft Azure interview?
Work through all 40 questions here, then the company-wise sets for the employers you are targeting. Quality matters more than count: be able to explain why each answer is right.
Which topics matter most for 10+ years of experience?
Focus first on Cloud strategy and operating model, Multi-cloud and hybrid, Leadership and hiring, Business case and risk.