Basic Information
| Field | Details |
|---|---|
| English name | EC2 Instance Types & Pricing Models |
| Full name | Amazon EC2 Instance Types and Purchasing Options |
| Chinese description | EC2 实例类型与计费模型 |
| Japanese description | EC2 インスタンスタイプと料金モデル |
| Exam frequency | ⭐⭐⭐⭐⭐ |
| Often confused with | On-Demand / Savings Plans / Reserved Instances / Spot / Dedicated Host |
In one sentence
Select EC2 families by resource profile and pricing models by workload stability and interruption tolerance.
Key points
- General Purpose balances resources; Compute, Memory, Storage, and Accelerated families target specific bottlenecks.
- On-Demand fits short or unpredictable use without commitment.
- Savings Plans and Reserved Instances trade commitment for discounts on stable workloads.
Exam takeaway
Spot offers deeper discounts for interruptible, fault-tolerant jobs; Dedicated options address tenancy or licensing needs.