You have an Alibaba Cloud account which has been bound to your credit card or PayPal account.
Log on to Alibaba Cloud official website.
Go to the Product page of the Web Hosting. Click Buy Now.
Check the product parameters, select Subscription Duration, and click Buy Now.
Confirm the order information, and click Place Order.
Complete the payment, and wait until the payment succeeds.
Then, you can log on to the console to manage the Web Hosting you bought.