Which of the following are correct about the basic ideas of AWS pricing? (Choose TWO.)
A question asking to choose two correct statements about the basic ideas of AWS pricing.
Pay-as-you-go for what you use is the basis, and you can stop paying by stopping resources when they are no longer needed.
This is correct. The basis of AWS is pay-as-you-go, and stopping or deleting resources stops further charges. Upfront payment and long-term contracts are not required.
Reserving resources provides no discount at all.
As with Savings Plans and Reserved Instances, committing to (reserving) usage provides a discount.
The claim that no discount is available is wrong, so it is incorrect.
Pricing is set uniformly worldwide and is the same in every Region.
AWS pricing varies by Region. Because the land, power, and procurement costs of data centers differ by location, the unit price of the same service changes by Region.
The claim that it is uniform worldwide in every Region is wrong, so it is incorrect.
There is a volume discount where the unit price drops as usage increases.
This is correct. For many services such as S3, a volume discount where the unit price drops as usage increases applies, giving you the benefit of economies of scale.
Once a resource is launched, its cost is fixed and the same amount is charged even after it is stopped.
On-demand resources stop incurring charges once they are stopped or deleted.
The claim that the same amount keeps being charged after stopping is wrong, so it is incorrect.
Pricing principles: pay-as-you-go (stopping ends charges) / further discounts for reserving / unit price drops as volume increases (volume discount). "All free," "no discounts," and "charged after stopping" are wrong.