I know it is not recommended, but for small (-to-medium) websites you can use DNS failover. I run non-critical services but still I like to have above-average u

I know it is not recommended, but for small (-to-medium) websites you can use DNS failover. I run non-critical services but still I like to have above-average uptime, so I have them configured in two separate physical locations by two different providers. From the point of view of visitors, they had zero downtime in the last 7 years, in spite of several hardware failures (disks, motherboard, power supply - all resolved within an hour). I know it because I tested it multiple times from various location checking what happens if one of them dies. Of course if you have millions of visitors a day, you'll do better with a more robust setup, but mine costs me €80/month.