Hoax - yet everyone believes it !!!
Under oracle's own policy document it is stated that:
"It may not be incorporated into any contract and does not constitute a contract or a commitment to any specific terms."
And so it doesn't exist.And so, the literal meaning of the actually signed agreement applies. Which means it must be licensed on AWS in exactly the same way as an in-premise situation.
1. Count the (physical) cores
2. Apply multi-core factor
Done. If any Oracle rep tells you otherwise, refer to the agreement and you're done. Works 100% of the time.