IIS is used by 6.37% of sites

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IIS, or Internet Information Services, is a web server software developed by Microsoft for hosting websites and web applications on Windows servers. It is an integral part of the Windows Server operating system.

Key features and characteristics of IIS include:

Web Server Functionality: IIS acts as a web server, allowing it to handle and serve HTTP requests from clients, such as web browsers. It supports various web protocols, including HTTP, HTTPS, FTP, SMTP, and NNTP.

Hosting Websites and Web Applications: IIS provides a platform for hosting websites and web applications built using different technologies, including ASP.NET, PHP, and HTML/CSS/JavaScript. It supports a wide range of web frameworks and technologies, making it versatile for hosting different types of web content.

Integration with Windows Server: IIS is tightly integrated with the Windows Server operating system, leveraging its security, scalability, and management features. It takes advantage of Windows authentication mechanisms, user management, and server resources to provide a seamless hosting environment.

Application Pool and Process Isolation: IIS utilizes an application pool model to isolate websites and applications from each other. Each application pool runs in its own worker process, ensuring that errors or performance issues in one application do not affect others. This provides enhanced stability, security, and resource management.

Centralized Management: IIS offers a graphical user interface (GUI) called IIS Manager for managing server configuration, websites, virtual directories, and application pools. It also provides a command-line interface and PowerShell cmdlets for advanced configuration and automation.

Security Features: IIS includes various security features to protect websites and applications. It supports SSL/TLS encryption for secure communication, offers integrated Windows authentication and role-based access control, and provides mechanisms to restrict access based on IP addresses and request filtering.

Performance Optimization: IIS includes features for performance optimization, such as output caching, dynamic compression, and request throttling. These features help improve the performance and scalability of hosted websites and applications.

Logging and Monitoring: IIS provides comprehensive logging capabilities to track and analyze web server activity. It generates log files containing information about requests, errors, and other relevant events. Additionally, IIS integrates with monitoring tools and allows for real-time performance monitoring and alerting.

Extensibility: IIS supports extensibility through various modules and extensions. Developers can create custom modules to add functionality or integrate with third-party modules to enhance the capabilities of the web server.

Application Deployment: IIS simplifies the deployment of web applications by providing features like Web Deploy and FTP publishing. These tools allow developers to easily publish and update web content on the server.

IIS is widely used as a web server platform for hosting websites and web applications on Windows servers. Its seamless integration with the Windows Server environment, robust features, and extensibility make it a popular choice for developers and system administrators.