The following table lists the API operations that are available for use in Dedicated Host (DDH).

API Description
AllocateDedicatedHosts Creates one or more subscription dedicated hosts. DDH provides dedicated physical resources for each tenant. You can create Elastic Compute Service (ECS) instances on a dedicated host and view the specifications of the physical server on which the dedicated host resides.
DescribeDedicatedHostTypes Queries the specifications of supported dedicated host types in a region, or the ECS instance families that are supported by the dedicated hosts.
DescribeDedicatedHosts Queries the detailed information of one or more dedicated hosts, including the physical performance metrics, virtual machine code, usage status, and list of ECS instances that have been created.
DescribeDedicatedHostAutoRenew Queries the auto-renewal status of one or more subscription dedicated hosts.
ModifyDedicatedHostAttribute Modifies the information of a dedicated host, including the name, description, and instance migration policy that is applied when the dedicated host fails.
ModifyDedicatedHostAutoRenewAttribute Enables or disables automatic renewal for one or more subscription dedicated hosts.
ModifyDedicatedHostAutoReleaseTime Sets the automatic release time for a pay-as-you-go dedicated host or cancels the automatic release of a pay-as-you-go dedicated host.
ModifyInstanceDeployment Changes the dedicated host of an ECS instance. The ECS instance and the destination dedicated host must be in the same region.
ModifyDedicatedHostsChargeType Modifies the billing method of a dedicated host.
ReleaseDedicatedHost Releases a pay-as-you-go dedicated host.
RenewDedicatedHosts Renews one or more subscription dedicated hosts.
RedeployDedicatedHost Migrates ECS instances from a failed dedicated host.