11-04 EC2 Dedicated Host vs Instance
Dedicated Hosts are single-tenant EC2 instances designed to let you Bring-Your-Own-License (BYOL) based on machine characteristics
| Dedicated Instances | Dedicated Hosts | |
|---|---|---|
| Isolation | Instance Isolation | Physical Server Isolation |
| Billing | Per instance billing (+$2 per region fee) | Per host billing |
| Visibility of Physical characteristics | No Visibilities | Sockets, cores, host ID |
| Affinity between a host and instance | No Affinity | Consistency deploys to the same instances to the same physical server |
| Targeted instance placement | No control | Additional control over instance placement on physical server |
| Automatic instance placement | Yes | Yes |
| Add capacity using an allocation request | No | Yes |