[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [Z] updates 2nd automatic software upgrades 2nd 3rd 4th uptime usability 2nd 3rd use cases academic operating system installations user authorized access HTML-based interface interface utility computing wait times utility computing 2nd 3rd 4th 5th 6th utility, data centers utilization 2nd 3rd 4th 5th 6th 7th low average resource server system |