1. Make sure their servers and equipment are in a world-class datacentre environment
You’ll want to make sure that your hosting provider, or their upstream partner, is located in a world-class datacentre. This ensures you have the protection that comes with this – which includes resilient power sources, industrial air conditioning, fire protection, access control, etc.
There are still a few companies hosting servers in back rooms and small centres where you could find your website going down due to poor management of the facility or poor resources. We’ve heard of some where servers have failed completely due to overheating, with no backup! If you’re on online business, you could see failure literally overnight.