What is Apache? you’ve likely visited hundreds of websites powered by an Apache host – and perhaps even used one to launch your own site. Apache is actually at the base of most of the websites online today! Apache is an open-source web server platform. A web server platform offers a way to publish content from your computer system onto the World Wide Web’s Hypertext Transfer Protocol (Hypertext Transfer Protocol) to serve content to web browsers on client machines.
And what that means is this: Apache is what most web sites (more than 1 billion of them, anyway) use to deliver content to you and all the other Internet users out there. When you type in a web address such as 5bestthings.com, the web server responds, serving up the information to you. Apache has become probably the most widely used web server operating today.