Servers, popularly known as web servers are a significant entity that plays a pivotal role in the functioning of World Wide Web (WWW). In technical terms, the primary function of a web server is to deliver web pages after processing the request to clients. The requests come to the servers in the form of HTML documents with the help of images, style sheets and scripts. A client web browser initiates communication to the server using HTTP and the server responds with the content.
If server finds itself unable to process the request, an error message is reflected on the client browser against the request. Many of the web servers like Apache HTTP Server and PHP support server-side scripting. That simply means the execution behavior of the web server is scripted in separate files. Apache and IIS are two most prominently used web servers by the web hosting administrators these days.
In the spectrum of World Wide Web, Apache Web server provides administrators, a widely advanced range of Web server features, including CGI, SSL, and virtual domains etc. This web server also supports plug-in modules for more feasible extensibility of functions. Apache is widely popular due to its reliability, easy configuration and negligible cost.
Earlier known as Internet Information Server, IIS is a web server application that contains a vast set of feature and modules and compatible with Microsoft Windows. For Web Hosting India administrators, IIS offers several utilities and features. After Apache, it is the most widely used web serve. IIS supports a number of protocols used on the internet.
These protocols include: