Final answer:
The incorrect statement regarding Amazon EC2 On-demand instances is that they require long-term commitments. On-demand instances offer a pay-as-you-go model without upfront payments or penalties for starting or stopping them, and provide resizable compute capacity.
Step-by-step explanation:
The statement that is NOT correct regarding Amazon EC2 On-demand instances is that they require long-term commitments. Amazon EC2 On-demand instances are billed by the second, which allows users to pay for compute capacity by the hour or the second with no long-term commitments or upfront payments. This pricing model benefits users by offering a pay-as-you-go approach. On-demand instances do indeed provide resizable compute capacity, enabling users to scale their usage up or down according to the demands of their applications. Lastly, On-demand instances can be launched and terminated as needed, providing users with complete control to start and stop instances at their convenience without facing any penalties for stopping them. The flexibility of Amazon EC2 On-demand instances makes them ideal for workloads that are unpredictable or do not require sustained use.