Yes, you will need to keep a spare running. And have written (and tested!) procedures around how to switch to the spare when members of your team are away.
All additional concerns and requirements that you need money, time, and people for. I'm not claiming a server-as-a-service / cloud has zero skill requirements, but it's a lot less than managing your own hardware.
I can't comment on total costs / costs over time though.
All additional concerns and requirements that you need money, time, and people for. I'm not claiming a server-as-a-service / cloud has zero skill requirements, but it's a lot less than managing your own hardware.
I can't comment on total costs / costs over time though.