Check of the specific port via TCP. This kind of check is useful to monitor network applications. If Ok, the port is open. Failure means or closed port, or complete unavailability of the server. You can use other types of check for further analysis.
Why a low uptime may affect not only your revenue, but also your company's reputation?
While you may be spending more time and resources on developing your website, you need to be sure that the core of the website is still performing well. There is a strong correlation between uptime and visitor conversions. Are you still wondering why is website uptime so important? Then take a deeper dive into this...