Billing

CFW can be billed in yearly/monthly (prepaid) or pay-per-usemode. For details, see Pricing.

Billing Items

CFW (yearly/monthly) is billed based on the edition, service duration, and specifications you purchase. If you select the pay-per-use billing mode, you will be charged based on the actual protection status.

**Table 1** CFW billing
Edition	Billing Mode	Billing Item	Billing
Standard	Yearly/Monthly	Required Duration	Billed on a yearly or monthly basis
		(Optional) Protected EIPs	Billed based on the purchased quantity
		(Optional) Peak Protection Traffic at Internet Boundary	Billed based on the purchased traffic
Professional	Pay-per-use	Usage duration	Billed for what you use

Billing Mode

Yearly/Monthly: The longer the subscription duration, the lower the price. In yearly/monthly mode, you are billed based on the purchase period specified in the order.
Pay-per-use: You are charged from the time when CFW is enabled to the time when CFW is disabled. If you enable the pay-per-use billing mode, you are billed for the number of protected IP addresses, peak traffic, and number of VPCs.

Renewal

After your yearly/monthly edition expires, there is a retention period for you.
This period varies depending on your account. For details, see Retention Period.