AWS — Amazon EC2 Instance Purchasing Options

Overview of AWS EC2 Instance Pricing models.

Amazon EC2

TL;DR:

1. On-Demand Instances: short workload, predictable pricing.
2. Reserved Instances: long workloads (≥ 1 year).
3. Convertible Reserved Instances: long workloads with flexible instances.
4. Scheduled Reserved Instances: launch within time window you reserve.
5. Spot Instances: short workloads, for cheap, can lose instances.
6. Dedicated Instances: no other customers will share your hardware.
7. Dedicated Hosts: book an entire physical server, control instance placement.
8. Savings Plans: added advantage on top of reserved instances is that you are allowed to change instance types.

On-Demand Instances

• Pay for what you use (Pay, by the second).
• No upfront payment.
• No long-term commitment.
• Recommended for short-term and uninterrupted workloads, where you can’t predict how the application will behave.

Reserved Instances

• Up to 75% discount compared to On-demand.
• Pay upfront for what you use with long term…