[TacticalCoder]

> The number one reason and tradeoff for cloud is uptime and availability and the cost of not having it

Uptime? There have been quite a few catastrophic cloud failures. And some lasted hours.

Five nine is something like 5 minutes of downtime a year. The clouds aren't anywhere near that.

[Unroasted6154]

If you use it correctly, with multiple availability zones and even multi regions you can reach very high reliability. They surely don't offer five 9s for a single zone. I am not aware of many multi regions outages. And they are also getting better over time, spending a lot more engineering hours on reliability that most companies. And if they fail to deliver on SLA they might give you money (depending on your contract I guess).

[throwaway2037]

Do you really think on-prem has more uptime than commercial cloud? For non-tech companies, no even close. Commercial cloud is adding nines to uptime and saving money by removing in-house IT admin staff.

[calvinmorrison]

the biggest miscalculation is really on expected uptime. People say they need 5 nines, yet take their car in for service twice a year for a tire rotation and oil change. How much uptime is _really_ required?