INTERNET

The Internet is a worldwide network of connected computer systems.

The World Wide Web (WWW) is a system of interlinked Hypertext documents accessed through the internet. Tim Berners-Lee specified the standards which should be used for the WWW in the early 1990's:

HTML: HyperText Markup Language. The publishing format for the Web, including the ability to format documents and link to other documents and resources.

URL: Uniform Resource Identifier. A kind of “address” that is unique to each resource on the Web.

HTTP: Hypertext Transfer Protocol. Allows for the retrieval of linked resources from across the Web.
An application called a 'Web Browser' is required to interpret and display HTML documents, along with their CSS styling and JavaScript scripts, among other things.

TCP/IP (Transmission Control Protocol/Internet Protocol) are the protocols used for transmitting data across the internet between hosts. They are the de facto standard for sending data as it is built into the widely used UNIX OS.

Redundancy - Having a duplicate device, or other method to prevent a website from going completely down. Examples:

• Have any storage devices in a RAID formation. That way, if one device fails, it won't affect the entire system or network.
• Keeping the site backed up, possibly in locations around the world
• Having each country host a separate version of the site, so if one goes down, it can be restored from there