(Optional) Step 4: Unsubscribe from Services

In this development scenario, DataArts Studio, OBS, and GaussDB(DWS) incur fees. If you configure notifications, you may be billed for the following service:

SMN: If you enable SMN notifications for your DataArts Studio modules, you need to pay for the notifications. For details, see SMN Pricing Details.
EIP: If you buy an EIP for your CDM cluster, you need to pay for the EIP. For details, see EIP Pricing Details.
DEW: If you enable KMS when creating a link in DataArts Migration or creating a connection in Management Center, you will be billed for key management. For details about the billing standards, see DEW pricing details.

After the development is complete, unsubscribe from DataArts Studio and other related services and delete resources in a timely manner to avoid undesired fees.

**Table 1** Unsubscription methods for services
Service	Billing	Unsubscription Method
DataArts Studio	DataArts Studio Billing	DataArts Studio instances support only the yearly/monthly billing mode. You can unsubscribe from the package by referring to Unsubscriptions.
OBS	OBS Billing	OBS supports pay-per-use and yearly/monthly billing modes. Packages cannot be unsubscribed. In this example, the pay-per-use billing mode is used. You can delete the created bucket after using it. In addition, DataArts Studio job logs and DLI dirty data are stored in an OBS bucket named dlf-log-{Project id} by default. You can delete the bucket after unsubscribing from DataArts Studio.
GaussDB(DWS)	GaussDB(DWS) Billing	GaussDB(DWS) supports pay-per-use and yearly/monthly billing modes. In this example, the pay-per-use billing mode is used. You can delete the GaussDB(DWS) cluster after you finish with it. If you chose the yearly/monthly billing mode, you can unsubscribe from the yearly/monthly package you bought and delete the GaussDB(DWS) cluster after you finish with it by referring to Unsubscriptions.
SMN	SMN Billing	You pay only for what you use. After you unsubscribe from DataArts Studio, no notification will be generated. You can also delete the topics and subscriptions that have been generated.
EIP	EIP Billing	EIP supports the pay-per-use and yearly/monthly billing modes. In this example, the pay-per-use billing mode is used. You can release the EIP after you finish with it. If you chose the yearly/monthly billing mode, you can unsubscribe from the yearly/monthly package you bought and release the EIP after you finish with it by referring to Unsubscriptions.
DEW	DEW Billing	KMS keys are billed pay per use. You can delete the KMS keys generated by DEW.