Web Server
Servers & Server SoftwareWeb Server is software (and sometimes the underlying machine) that accepts HTTP/HTTPS requests from browsers and returns web content such as HTML, images, and API responses. It manages connections, routing, caching, compression, and security controls like TLS. In hosting, the web server stack influences speed, compatibility, resource usage, and how easily you can configure domains, rewrites, and access rules.
How It Works
A web server listens on network ports (typically 80 for HTTP and 443 for HTTPS) and handles incoming requests from clients. When a request arrives, it selects the correct virtual host (domain), applies rules such as redirects and URL rewrites, and then serves a static file or forwards the request to an application runtime (for example PHP-FPM, Node.js, Python, or a Java application server). The response is sent back with headers that control caching, cookies, compression, and content type.
Modern web servers also act as traffic managers. They can terminate TLS, enforce security headers, rate-limit abusive clients, and log requests for troubleshooting. Many setups use a reverse proxy layer (often Nginx) in front of an application server (often Apache or a framework runtime) to improve performance and isolate responsibilities. Configuration is typically done through server config files or a hosting control panel, and changes affect how your site behaves under load and how it handles edge cases.
Why It Matters for Web Hosting
When comparing hosting plans, the web server determines what your site can run and how it performs. Some stacks are better for dynamic PHP sites, others excel at serving static assets or acting as a reverse proxy. It also affects features you may rely on, such as .htaccess support, HTTP/2 or HTTP/3 availability, caching options, and how much control you have over rewrites, headers, and TLS settings. Knowing the web server helps you choose a plan that matches your application and expected traffic.
Common Use Cases
- Serving static websites and assets (HTML, CSS, images, downloads)
- Running dynamic sites by proxying to application runtimes (PHP, Node.js, Python, Java)
- Reverse proxying and load balancing across multiple backend servers
- TLS termination, redirects, and security header enforcement at the edge
- Hosting APIs and handling routing, compression, and caching headers
- Logging and monitoring request patterns for debugging and capacity planning
Web Server vs Application Server
A web server focuses on HTTP handling and efficient delivery of content, while an application server runs the application code and business logic. In many hosting environments, the web server (such as Nginx or Apache) serves static files and forwards dynamic requests to an application layer (such as PHP-FPM, a Node.js process, or a Java runtime). For buyers, this distinction matters because a plan may advertise a web server stack but still limit which application runtimes, process managers, or deployment methods you can use.