Purchasing PlansOn-Demand: No discount; pay only for what you use. Suitable for temporary or unpredictable workloads.Reserved Instances: Up to 72% discount, but requires a 1- or 3-year commitment. Best for steady workloads.Savings Plans: Up to 66% discount; you pay a fixed amount per hour, offering flexibility across instance types and regions.Spot Instances: The cheapest option, but unstable — instances can be terminated at any time when capacity is needed.Dedicated Hosts: Provides an entire physical server for your exclusive use.Capacity Reservations: Guarantees reserved capacity in a specific Availability Zone, ensuring resources are available when needed.