There are many website hosting vendors. Every other vendor guarantees 99.9% uptime and nearly all offerings are same. In this situation how to select the best vendor for the organization
I wouldn't solely look at uptime.
I judge a company buy how well they reply to support issues and whether you can pick up a telephone and speak with someone.

I judge a company buy how well they reply to support issues and whether you can pick up a telephone and speak with someone.