We typically think of the web as the sites we visit in a browser. On the surface, a site is like a brochure, giving you information about something. Sometimes there is a form you can fill out, or an application you can interact with. Behind the scenes, there is a pile of technology needed to allow all this to happen. Web language and protocol standards allow computers around the world to interoperate, so the page produced by a web server can be read in any browser.