What Is a Combined Service?
A combined service consists of multiple resources and is purchased as a whole. The resources in a combined service must be purchased, used, renewed, changed, unsubscribed from, frozen, unfrozen, deleted, and billed together.
Example:
You placed a yearly/monthly subscription order for an ECS product with the following configured: ECS instance (ECS, system disk, data disk, and image), shared disk instance, and EIP instance (EIP and bandwidth).

- An ECS instance is considered as a combined service, in which all resources must be purchased together. Other related instances, such as shared disks and EIPs, can be purchased separately or together with the ECS. If they are placed in a combined order and a combined transaction is generated, they must be paid together. Subsequent transactions can be performed separately for each service.
- System disks, data disks, and shared disks are distinguished only when you are placing an order. After the order is generated, all of them are displayed as EVS.
- Free images are not shown in orders, while billable images are displayed.
- EIPs have not been processed as a combined service yet. Your experience remains unchanged.
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