The Apache HTTP web server
To host websites and web applications, you can use the Apache HTTP web server. A web server is a network service that distributes contents, including web pages and other document types, to clients over the internet.
Web servers are also known as HTTP servers because they use the HTTP protocol. The Apache HTTP Server, also known as httpd, is an open source web server developed by the Apache Software Foundation. If you are upgrading from a previous release of Red Hat Enterprise Linux, you must update the httpd service configuration.