Why the definition matters
Providers price CPU per vCPU or per physical core. A price per physical core covers two vCPUs, so it must be halved before you compare it with a price per vCPU.
What is a vCPU?
A vCPU is one virtual processor core. On most clouds it is one thread of a physical core, so a physical core with two threads counts as two vCPUs.
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