What Web Server Does Azure Use?


Angela Bailey

What Web Server Does Azure Use?

When it comes to hosting websites and web applications on Microsoft Azure, the question of which web server is being used often arises. Azure supports multiple web server options, each offering unique features and capabilities to meet different needs. In this article, we will explore some of the popular web servers used in Azure and their key characteristics.

Azure App Service

Azure App Service is a fully managed platform for building, deploying, and scaling web applications. Underneath the App Service, Azure uses the Internet Information Services (IIS) as the default web server for hosting your applications. IIS is a powerful and reliable web server that has been a part of the Windows Server operating system for many years.

Key Features of IIS:

  • Support for multiple programming languages such as ASP.NET, PHP, Node.js, Python, etc.
  • Integration with other Microsoft products and services like Azure Active Directory, SQL Database, etc.
  • Easy configuration and management through the Azure portal or using tools like PowerShell or CLI.

Azure Virtual Machines

If you prefer more control over your web server environment or need to run specific versions of web servers not available in App Service, you can use Azure Virtual Machines (VMs). With VMs, you have the flexibility to choose from various web servers based on your requirements.

1. Internet Information Services (IIS)

IIS is also available as an option when deploying virtual machines in Azure. This allows you to have complete control over IIS configurations and settings. You can install any version of IIS that is compatible with your chosen Windows Server image.

2. Apache HTTP Server

Apache HTTP Server is an open-source web server widely used across the internet. It is known for its stability, security, and flexibility. Azure provides pre-configured VM images with Apache installed, making it easy to get started with this popular web server.


NGINX is a lightweight and high-performance web server known for its ability to handle concurrent connections efficiently. It is often used as a reverse proxy or load balancer in front of other web servers. Azure offers VM images with NGINX pre-installed, enabling you to leverage its performance advantages.

Azure Kubernetes Service (AKS)

Azure Kubernetes Service is a managed container orchestration service that simplifies the deployment, management, and scaling of containerized applications using Kubernetes. AKS allows you to deploy your applications using any web server that can run within a container.

Some popular web servers used with AKS:

  • NGINX Ingress Controller: A widely used solution for routing external traffic into your AKS cluster.
  • HAProxy: A reliable and high-performance load balancer suitable for distributing traffic within your cluster.
  • Traefik: A modern and dynamic reverse proxy that integrates well with Kubernetes.

In conclusion, Microsoft Azure supports various web servers depending on the hosting options you choose. Whether you opt for Azure App Service, Azure Virtual Machines, or Azure Kubernetes Service, there are multiple choices available to suit your specific needs and preferences. Understanding the capabilities and features of these web servers can help you make informed decisions when hosting your websites or applications on Azure.

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