[sagargv]

How does Amazon implement instances like t2.nano? If there are 40 t2.nano instances on a quad core physical machine, what happens when all the users want 100% CPU, even if it's only for 10 minutes? Are instances automatically migrated to a different physical machine if this happens?

[fulafel]

EC2 can't do migration, that's one of the things Google Compute has over EC2.

[phamilton]

Why not, I wonder? Xen has supported migration for close to a decade now. I assume they don't use a compatible storage layer?