7.1
Pricing models
On-Demand, Reserved, Spot, and Savings Plans — match workload predictability and fault tolerance.
Key points
- Spot can be interrupted — good for fault-tolerant batch work.
- Reserved / Savings Plans for predictable usage.
AWS pricing models
On-Demand
Generally does not require a long-term commitment. Good for short-term or unpredictable workloads.
Reserved
Longer-term commitments can provide discounted pricing for eligible usage models. Good for predictable workloads.
Spot
Uses available spare AWS capacity at potentially significant discounts.
Important
Spot workloads can be interrupted. Good for fault-tolerant or flexible batch workloads.
Savings Plans
Provide discounted pricing in exchange for a usage commitment.
Exam focus
Interrupt-tolerant cheap compute → Spot.