CustomerGauge is hosted in the Amazon Web Services cloud, it features mirrored AZ databases and many other features that make the system very resilient.
Of course, there are times when we have unplanned downtime - but we design the system to come back fast from a failure.
We also have "planned downtime" for upgrades or maintenance. Normally we make the switch very rapid (a few minutes) so you would hardly notice. We do sometimes take a little longer - then we alert you 2 -3 weeks in advance.
Check out our live status with history to see how we keep our promises. http://status.customergauge.com/