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Dedicated hosts
- Physical servers dedicated just for your use.
- You then have control over which instances are deployed on that host.
- Available as On-Demand or with Dedicated Host Reservation.
- Useful when having server-bound software licenses that use metrics like per-core, per-socket or per -VM.
- Each dedicated host can only run one EC2 instance size type.
- Good for regulatory compliance or licensing requirements.
- Predictable performance.
- Complete isolation.
- Most expensive option.
- Billing is per host
Dedicated instances
- Virtualized instances on dedicated hardware.
- Does not provide the additional visibility and controls of dedicated hosts (e.g. how instances are placed on a server).
- May share hardware with other non-dedicated instances in the same account.
- Available as On-Demand, Reserved Instances and Spot Instances.
- Billing is per instance.
- Cost additional $2 per hour per region
