📌 Series Context: This is the eighth article in the 10‑part series covering the most important areas of .NET interview preparation. In Part 1, we introduced the .NET ecosystem. In Part 2, we covered C# fundamentals. In Part 3, we explored advanced C# features. In Part 4, we discussed ASP.NET MVC. In Part 5, we focused on ASP.NET Core. In Part 6, we covered Entity Framework & Data Access. In Part 7, we explored Web API & Microservices. Now, we’ll dive into Azure & Cloud Integration.
Why Azure & Cloud Integration?
Modern .NET applications are often cloud-native. Microsoft Azure provides a rich ecosystem for hosting, scaling, and integrating applications. Interviewers frequently ask about Azure App Services, Functions, Storage, and Cosmos DB.
Key Azure Services for .NET Developers
Azure App Service
Host web applications and APIs.
Supports automatic scaling.
Simplifies deployment and infrastructure management.
Azure Functions
Serverless compute platform.
Executes event-driven workloads.
Automatically scales based on demand.
Azure Storage
Supports multiple storage options:
Blob Storage
Queue Storage
Table Storage
Cosmos DB
Globally distributed NoSQL database.
Low-latency access worldwide.
Supports multiple consistency models.
Azure DevOps
CI/CD pipeline automation.
Source control integration.
Automated testing and deployments.
Hosting a .NET App on Azure
Deploying an ASP.NET Core application to Azure App Service:
dotnet publish -c Release
az webapp up `
--name HospitalApp `
--resource-group HospitalRG `
--runtime "DOTNET|6.0"
👉 Interview Tip: Be ready to explain the difference between Azure App Service and Azure Functions.
Azure Functions Example
Azure Functions are ideal for lightweight, event-driven workloads.
[FunctionName("ProcessInvoice")]
public static async Task<IActionResult> Run(
[HttpTrigger(
AuthorizationLevel.Function,
"post"
)]
Invoice invoice,
ILogger log)
{
log.LogInformation(
$"Processing invoice {invoice.Id}"
);
return new OkObjectResult(
$"Invoice {invoice.Id} processed"
);
}
👉 Serverless functions are commonly used for:
Cosmos DB Integration
Integrating Cosmos DB with a .NET application:
CosmosClient client =
new CosmosClient(connectionString);
Database db =
await client.CreateDatabaseIfNotExistsAsync(
"HospitalDB"
);
Container container =
await db.CreateContainerIfNotExistsAsync(
"Patients",
"/id"
);
👉 Interview Tip: Be prepared to explain:
Partition Keys
Global Distribution
Consistency Levels
Throughput (RU/s)
Cloud Deployment Considerations
Scalability
Security
Role-Based Access Control (RBAC)
Managed Identities
Azure Key Vault integration
Network security controls
Monitoring
Azure provides comprehensive monitoring through:
Cost Optimization
Common strategies include:
Pay-as-you-go pricing
Reserved Instances
Auto-scaling rules
Resource optimization
Common Interview Questions (Part 8)
What is the difference between Azure App Service and Azure Functions?
How do you integrate Cosmos DB with .NET applications?
Explain scalability and monitoring in Azure.
What are Managed Identities in Azure?
How do you set up CI/CD pipelines with Azure DevOps?
Conclusion
In this eighth part, we covered:
Key Azure services for .NET developers.
Hosting applications using Azure App Service.
Event-driven computing with Azure Functions.
NoSQL integration using Cosmos DB.
Cloud deployment considerations such as scalability, security, monitoring, and cost optimization.
This foundation prepares you for Part 9, where we'll explore Testing & Performance—covering unit testing, mocking, and performance tuning in .NET.
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