A capacity reservation is a cloud computing service feature that sets aside physical hardware and compute resources in a specific zone ahead of time.
Main Aim of the Service
- Guarantee availability: Ensure your critical virtual machines or compute instances can launch immediately when needed.
- Prevent shortages: Protect vital workloads from failing to start due to high demand or crowded data centers in a specific region.
- Support urgent needs: Provide reliable resources for disaster recovery, unexpected traffic spikes, seasonal events, or sudden batch jobs
- Separate capacity from billing: Hold physical hardware without forcing long-term financial commitments, letting you combine the reservation with standard on-demand pricing or flexible discounts.