Internet Information Services


Internet Information Services (IIS) is a web server software created by Microsoft, used for hosting web applications and sites on Windows operating systems. IIS supports various internet protocols, such as HTTP, HTTPS, FTP, and SMTP. It plays a crucial role in delivering content, managing websites, and offering a customizable, secure environment for web administrators.


The phonetic pronunciation of “Internet Information Services” would be:In-ter-net In-for-may-shun Ser-vi-ses

Key Takeaways

  1. Internet Information Services (IIS) is a flexible, secure, and manageable web server developed by Microsoft that allows users to host and manage websites and web applications on Windows-based servers.
  2. IIS supports several protocols, such as HTTP, HTTPS, FTP, and SMTP, facilitating diverse web hosting purposes, ranging from serving static content and dynamic web pages to managing email servers.
  3. With its robust, built-in security features such as authentication, authorization, and SSL support, IIS ensures a secure web environment for different types of web applications, making it a popular choice for hosting enterprise-level web services.


Internet Information Services (IIS) is an essential technology term because it refers to a versatile and extensible web server developed by Microsoft.

As a critical component of Windows Server Operating Systems, IIS enables the creation, management, and deployment of websites, web applications, and services, improving the overall web hosting infrastructure’s efficiency and performance.

It supports crucial web technologies and protocols, such as HTTP, HTTPS, FTP, and SMTP, ensuring robust functionality and secure communication across the internet.

Additionally, IIS offers easy integration with various programming languages and frameworks, making it a popular choice for developers and web administrators seeking a robust yet user-friendly platform for their digital projects.

In summary, IIS’s importance lies in its potential to facilitate seamless web interaction, robust application deployments, and secure data transmission, driving the continuous evolution of online services and experiences.


Internet Information Services (IIS) serves as the backbone for millions of websites and applications to deliver content and enabling essential online functionalities. Developed by Microsoft, IIS is a flexible, powerful, and easy-to-use web server designed to host websites, web applications, and services.

IIS works seamlessly with various Microsoft technologies, such as ASP.NET, making it a popular choice for organizations already invested in the Microsoft ecosystem. As an extensible platform, IIS provides value in the form of improved performance, security, and scalability, ensuring a seamless user experience for the end user.

IIS is widely employed in various contexts, from providing internal corporate services to running large-scale public websites and applications. It helps users manage and configure multiple aspects of their web applications, such as authentication, caching, and compression, ensuring faster load times and optimal resource usage.

Its modular architecture enables developers and system administrators to add, remove, and replace features as needed, tailoring the server environment to meet their specific requirements. In summary, Internet Information Services functions as a reliable and customizable web server platform, vital to the smooth operation of countless internet services and the satisfactory experiences of their end users.

Examples of Internet Information Services

Internet Information Services (IIS) is a web server and a set of related tools designed by Microsoft for managing and serving content on the internet or an intranet. Here are three real-world examples of IIS technology:

E-commerce Websites: IIS is used by many e-commerce websites as their web server to host their online stores and manage user authentication, transactions, and the overall shopping experience. Since IIS supports ASP.NET, a programming framework developed by Microsoft, it allows developers to build e-commerce sites with seamless integration with other Microsoft products like SQL Server and Active Directory.

Corporate Intranets: Companies use IIS to host their internal websites, web applications, and web-based tools such as employee directories, project management platforms, and document management systems. IIS provides a secure environment for these intranets, as it supports various authentication protocols and can easily be integrated with existing company infrastructure. Intranets built on IIS help in better communication and collaboration among employees, leading to increased productivity.

Content Management Systems (CMS): IIS is also popular among developers who use the platform to host web-based content management systems such as Sitecore and Umbraco. These systems allow companies to create, manage, and publish their digital content on the web easily. Since IIS supports Microsoft technologies like ASP.NET, it becomes an obvious choice for developers working with CMS that require Microsoft integrations, ensuring smooth deployment and compatibility with existing systems.

FAQ: Internet Information Services

What is Internet Information Services (IIS)?

Internet Information Services (IIS) is a flexible and extensible web server created by Microsoft. It is used to serve web applications, static and dynamic content, as well as providing various services such as FTP, SMTP, and more. IIS is tightly integrated with the Windows operating system and supports hosting multiple websites on a single server.

How do I install IIS on a Windows server?

To install IIS on a Windows Server, follow these steps:
1. Open the Server Manager and click on “Add Roles and Features.”
2. In the wizard, select the “Role-based or feature-based installation” option.
3. Select the server you want to install IIS on.
4. In the server roles section, check the box next to “Web Server (IIS).”
5. Click Next and proceed through the remaining steps of the wizard.
6. After completing the wizard, IIS will be installed on your server and can be managed via the IIS Manager console.

How do I host a website on IIS?

To host a website on IIS:
1. Launch IIS Manager and expand the server node in the connections pane.
2. Right-click the “Sites” folder and select “Add Website.”
3. Provide a site name and choose a physical path where your website files are located.
4. Select an IP address and specify a port number for your website.
5. Configure the website’s bindings and other settings as required.
6. Click “OK” to create the new website, and IIS will start serving the site according to the specified settings.

What are application pools in IIS?

Application pools in IIS are a way to group and isolate web applications for better performance, security, and reliability. Each application pool has its own set of configurations and runs a separate instance of the IIS worker process. This ensures that issues affecting one application do not impact others hosted on the same server. Application pools can be configured to restart automatically in the event of a failure, ensuring your applications remain available.

How do I secure my IIS webserver?

To secure your IIS web server, follow these best practices:
1. Keep your server updated with the latest patches and security updates.
2. Enable and correctly configure SSL/TLS to encrypt communication between the server and clients.
3. Disable unneeded services and features to reduce the attack surface.
4. Use strong access controls and authentication methods to limit unauthorized access.
5. Regularly review and monitor logs for unusual activity.
6. Run server and applications with the least privilege to minimize the potential damage from security breaches.

Related Technology Terms


  • Web Server
  • Application Pool
  • 3.

  • HTTPS and SSL
  • 4.

  • URL Rewrite Module
  • 5.

  • Microsoft Web Platform Installer


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