If you have a high traffic website or the website is generating a high income for you, then you definitely need to monitor the up time of this website.
Like people always say time is money. If your website is down for even an hour, definitely it will put a dent in your income. In order to ensure that your hosting provider is doing a good job, you need to monitor it.
You can monitor your website up time by paying some company that specializes in monitoring website.
One of the companies I highly recommend is http://www.dotcom-monitor.com
Dotcom Monitor has been established since 1999.
In 2009, they are the winner for TMC Labs Innovation Award.
Dotcom-Monitor is an advanced Website Monitoring service that ensures the performance and up time of your e-business by bringing together Monitoring, Reporting, Notification, Escalation and Analysis in the combination best suited to your needs.
Basically the company provided the following services:
a) Server View Monitoring
Up time and Availability Monitoring
Provides External Up time, Web Performance and SLA Monitoring from around the globe
b) User View Monitoring
Monitoring Web Applications Performance
This is to ensure availability and optimal end-user experience.
c) Load View Monitoring
Load View Stress Testing
Quick and affordable way to stress test your web server performance
Therefore, if you are having critical websites that cannot to be down, then you need to monitor your web hosting company to ensure they are doing their job well.