What is Uptime?
Uptime is a measure of the time in which a computer system, has been working or operational. It is sometimes measured in terms of a percentile. For instance, one standard for uptime that discussed as a goal called five 9s, which implies that a computer is operational 99.999 percent of the time. Uptime process is opposite to the downtime. In addition to this, it is often used as a measure of computer operating system reliability, in which this time can be represented as the time a computer can be left unattended, regardless of crashing or needing to be rebooted for maintenance or administrative purposes. A service level agreement, or SLA contract may include uptime/downtime parameters that indicates how much time a service is expected to remain operational.
Uptime is very crucial for your cloud hosting service and if the website is not available even for some time, it would impact the business at a great level. This might also impact your Google ranking as if your website is unavailable for a fraction of time then the customers get exasperated and hence Google may recognize your website as unreliable.