Definition: Web
The Web is essentially a client-server application. The client is a piece of software called a web browser. The server is a piece of software called a web server. The web browser communicates accross the Internet with the web server, using established protocols and data formats. These include, amoung others: HTTP, HTML and URL-encoded, all of which are defined by various standards organizations. Thus, understanding the web is largly matter of understanding those protocols and data formats, namely: HTTP, HTML and URL-encoded.