20 Azure Web App Service Interview Questions and Answers

Azure Web App Service is a cloud-based platform that allows developers to create and host web applications. Azure Web App Service is a popular choice for developers because it is scalable, reliable and easy to use. When interviewing for a position that requires Azure Web App Service, it is important to be prepared to answer questions about your experience and knowledge. In this article, we will review some of the most common Azure Web App Service interview questions.

Azure Web App Service Interview Questions and Answers

Here are 20 commonly asked Azure Web App Service interview questions and answers to prepare you for your interview:

1. What is Azure App Service?

Azure App Service is a cloud computing service created by Microsoft for building, deploying, and scaling web applications. It is a fully managed platform that takes care of all the infrastructure and server management for you, so you can focus on building your app.

2. Can you give me an overview of the architecture of Azure App Services?

Azure App Services are a cloud-based platform that allows developers to create web and mobile apps. The platform is made up of a number of different components, including web servers, databases, storage, and networking. Azure App Services are designed to be scalable and reliable, so that apps can handle large amounts of traffic and data.

3. What are some common use cases for Azure App Services?

Azure App Services are often used for web applications, mobile applications, and RESTful APIs. They can also be used for background jobs, such as processing payments or sending notifications.

4. How do you create a new Web App using Visual Studio or PowerShell?

You can create a new Web App using Visual Studio by opening the New Project dialog, selecting the ASP.NET Web Application template, and then choosing the Web Forms or MVC option. You can also create a new Web App using PowerShell by running the New-AzureRmWebApp cmdlet.

5. What’s the difference between Azure App Services, Cloud Services, and Virtual Machines?

Azure App Services are a Platform as a Service (PaaS) offering that allow you to build and deploy web applications without having to worry about the underlying infrastructure. Cloud Services, on the other hand, are a Infrastructure as a Service (IaaS) offering that provides you with more control over the underlying infrastructure but also requires you to manage it. Virtual Machines are also an IaaS offering but provide you with even more control than Cloud Services.

6. What happens when you scale up your app in Azure App Service?

When you scale up your app in Azure App Service, you are essentially increasing the number of web server instances that are available to serve requests for your app. This can help to improve the performance and availability of your app, as well as handle increased traffic levels.

7. What are the different deployment options available with Azure App Services?

Azure App Services offers a few different deployment options to choose from, depending on your needs. You can deploy your app directly from Visual Studio, use FTP to deploy your app, or use local Git to deploy your app.

8. What are the various levels at which scaling can be done with Azure App Services?

Azure App Services can be scaled at the server level, the database level, and the application level.

9. What is the advantage of using Azure App Services over AWS Elastic Beanstalk?

Azure App Services provides a number of features and benefits that are not available with AWS Elastic Beanstalk. For example, Azure App Services offers built-in support for monitoring and diagnostics, auto-scaling, and staging environments. Additionally, Azure App Services provides a number of features to make it easier to develop and deploy web applications, such as built-in support for popular web development frameworks and continuous deployment from a variety of sources.

10. How does traffic management work in Azure App Services?

Azure App Services uses a feature called Traffic Manager to help control how traffic is routed to your web app. Traffic Manager uses DNS to direct traffic to the closest or best-performing instance of your app. You can also use Traffic Manager to do things like A/B testing or canary deployments, where you route a portion of traffic to a new version of your app to test it out before rolling it out to everyone.

11. How do you manage environments like Dev, Test, Staging, and Production with Azure App Services?

Azure App Services provides a few different ways to manage environments like Dev, Test, Staging, and Production. One way is to use the Azure Portal to create different App Service Plans for each environment. Another way is to use Azure Resource Manager to create and manage different deployments for each environment.

12. What are the best practices to follow when deploying applications to Azure App Services?

There are a few key things to keep in mind when deploying applications to Azure App Services:

1. Make sure that your application is stateless, as this will make it easier to scale.

2. Use a separate storage account for your application’s data, as this will make it easier to manage.

3. Use a separate database for your application’s data, as this will make it easier to scale.

4. Make sure to test your application thoroughly before deploying it, as this will help to avoid any potential issues.

13. What’s the process used by Azure App Service to automatically upgrade your application from one version to another?

Azure App Service uses a process called “rolling upgrade” to automatically upgrade your application from one version to another. This process involves first upgrading the application on a small number of servers, and then gradually rolling the upgrade out to more servers until all servers in the App Service are running the new version of the application.

14. What are the steps required to set up continuous integration with GitHub for Azure App Services?

The first step is to create a new Azure App Service, and then link it to your GitHub repository. Next, you will need to create a new branch for your code changes. Once you have made your code changes, you will need to push the changes to the GitHub repository. Finally, you will need to create a new pull request to merge the changes into the master branch.

15. Is it possible to run multiple services on the same host instance? If yes, what are the advantages of doing so?

Yes, it is possible to run multiple services on the same host instance in Azure. The main advantage of doing so is that it can save on hosting costs, as you only need to pay for a single instance instead of multiple instances. Additionally, it can simplify management and deployment, as you only need to manage and deploy a single service instead of multiple services.

16. What are Azure Mobile Apps?

Azure Mobile Apps are a cloud-based service that helps developers build mobile applications that connect to data stored in the cloud. Azure Mobile Apps provides a set of tools and services that make it easy to connect mobile applications to backend data sources, such as databases and web services.

17. What is auto-scaling in the context of Azure App Services?

Auto-scaling is the ability of the Azure App Service to automatically scale up or down in response to changing demand. This ensures that your app always has the resources it needs to meet the demands of your users, without overspending on resources when demand is low.

18. How do you debug an Azure App Service if something goes wrong during deployment?

The first step is to check the Azure App Service logs. These logs can be found in the Azure portal, and they will give you information about what went wrong during the deployment process. If you need more information, you can also enable remote debugging for your Azure App Service. This will allow you to attach a debugger to your Azure App Service and step through the code to find the root cause of the problem.

19. What are the security features provided by Azure App Services?

Azure App Services provides a number of security features to help keep your web applications safe. These features include built-in authentication and authorization, SSL/TLS encryption, and web application firewalls.

20. How much downtime should we expect when upgrading our Azure App Services to the latest version?

There is no definitive answer to this question, as it will vary depending on the size and complexity of your app, as well as the specific changes being made in the upgrade. However, Microsoft does provide some guidance on expected downtime for various types of upgrades. For example, they state that a “typical” in-place upgrade (where the app is upgraded without being taken offline) should take less than an hour.