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Cloud Computing · Foundational

On-Demand Instances

EC2 pricing model paying per second or hour for compute with no long-term commitment.

Definition

On-Demand Instances are billed for the compute capacity used with no upfront payment or commitment, making them suitable for short-term, unpredictable or spiky workloads and for testing. They are the most flexible but most expensive EC2 purchase option per hour.

Example

A two-week proof of concept runs on On-Demand Instances that are terminated when the test ends.

Exam tip

Choose On-Demand for short, uninterruptible or unpredictable workloads; choose Reserved Instances or Savings Plans for steady-state usage.

Don't confuse it with

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