A startup is planning to deploy their web application on AWS and wants to ensure they are utilizing the most cost-effective resources without making long-term commitments. Which AWS pricing option allows the startup to pay for compute capacity by the hour or second with no long-term commitments, providing the flexibility to change usage without upfront fees?
Spot Instances
Dedicated Hosts
Savings Plans
On-Demand Instances
Capacity Reservations
Reserved Instances