Dedicated Host (DDH) is a specialized solution that Alibaba Cloud provides for enterprise customers. It offers highly cost-effective features, such as dedicated physical resources, flexible deployment, and rich configurations. DDH can effectively reduce the total cost of ownership (TCO) for enterprises to migrate to the cloud.

A dedicated host is a cloud host with its physical resources dedicated to a single tenant. As the only tenant of the server, you do not need to share the physical resources of the host with other tenants. You can also obtain information about the physical attributes of this physical server, including the number of CPUs (number of sockets), number of physical CPU cores, and memory size. You can create Elastic Compute Service (ECS) instances of an instance family that is compatible with the host specifications. For more information about dedicated host types, see Dedicated host types.


DDH provides automatic deployment and host association, which allows you to flexibly deploy your workloads. For more information, see Features.


DDH meets strict security compliance requirements and allows you to bring your own licenses (BYOL) to the cloud. This solution provides robust security while helping you reduce the cost of migrating your workloads to the cloud. For more information, see Scenarios.


DDH provides a dedicated hosting environment for a single tenant based on the virtualization technology of Alibaba Cloud. It offers flexible and scalable services that enable you to enjoy exclusive use of all resources provided by a physical server. The following figure shows the difference between dedicated hosts and shared hosts.Differences

ECS instances running on dedicated hosts have the same performance and functionality as those running on shared hosts. For more information, see Benefits.

Related services

For more information about Alibaba Cloud services supported by ECS instances running on dedicated hosts, see What is ECS?.

ECS instances on dedicated hosts differ from ECS instances on shared hosts. For more information, see ECS instances on different hosts.

Usage notes

For more information about how to use DDH resources, see Limits.

You can use the ECS console to create a dedicated host. For more information, see Create a dedicated host.


DDH supports subscription-based billing. For more information, see Pricing overview.