Active Monitoring is the way to check the site performance by simulation of visiting by real users.

Availability of a site shows if a site is accessible from the Internet.

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Content check is a way to check the presence of specific info on the page.

Database monitoring - DB check for access and regular execution of the specified query.

Distributed monitoring is a method of website monitoring when the checking is performed from several locations.

DNS - domain name system, a system for locating a web site.

Downtime is when your site does not work. It's really bad.

HTTP - hyper text transfer protocol, a way to transfer website data via Internet.

HTTP methods define actions, wished to perform to a specific site.

Passive Monitoring is the way to check the site performance by server-side software.

Ping is request message for protocol ICMP.

Example of monitoring a webform with POST method.

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Response time monitoring is testing how fast is your site.

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Uptime is the period of time when a site performs well.

Web Hosting is a service which makes a site available from the Internet.

Website is a basic unit of information in the Internet.

Website monitoring is an automated process of checking availability of a site.