You must activate CAPTCHA 2.0 before you use this service.
Background information
CAPTCHA 2.0 is billed on a pay-as-you-go basis. After you activate CAPTCHA 2.0, you can use resources on demand without the need to purchase resources in advance. You are charged based on your resource usage. Fees are deducted from the balance of your Alibaba Cloud account after bills are generated at the end of each billing cycle.
Before you activate CAPTCHA 2.0, you can view the following topics to learn about CAPTCHA 2.0:
Pay-as-you-go section of the "Billing" topic
Activate CAPTCHA 2.0
Go to the buy page of Alibaba Cloud CAPTCHA 2.0.
Click Buy Now and follow the instructions to activate CAPTCHA 2.0.
What to do next
After you activate CAPTCHA 2.0, you must integrate CAPTCHA 2.0 into your business to achieve security verification. For more information, see Integration guide.
View verification statistics. For more information, see View verification statistics.