This topic describes how to purchase Anti-DDoS Pro instances, Anti-DDoS Premium instances, and Anti-DDoS Premium Mainland China Acceleration (MCA) plans.

Select an instance type

You can purchase an Anti-DDoS instance based on region where the service is deployed.
  • You must purchase an Anti-DDoS Pro instance for services deployed in mainland China.
    Notice You cannot use Anti-DDoS Pro instances to protect domain names that are without an Internet Content Provider (ICP) filings. Before you use an Anti-DDoS Pro instance to protect your website, apply for an ICP filing for the domain name of your website. For more information, see ICP filing application overview.
  • You must purchase an Anti-DDoS Premium instance for services deployed in regions outside mainland China.
  • If your origin server is deployed in regions outside mainland China and provides services to users in mainland China, we recommend that you purchase an Anti-DDoS Premium instance and an MCA plan. For more information, see Scenarios.

Purchase an Anti-DDoS Pro instance

  1. Go to the buy page of Anti-DDoS Pro and log on with your Alibaba Cloud account.
  2. Specify the specifications of the Anti-DDoS pro instance based on your business needs.Buy page
    Parameter Description
    Product Type Anti-DDoS Pro (Mainland China) is selected by default.
    Mitigation Plan Profession is selected by default.
    Basic Protection Specify the basic protection bandwidth for the instance.

    Basic protection is billed on a subscription basis and enabled after you complete the payment. The total instance cost increases with the basic protection bandwidth that you select.

    Burstable Protection Specify the burstable protection bandwidth for the instance.
    Burstable protection is billed on a pay-as-you-go basis. Burstable protection determines the maximum mitigation capacity provided by the instance.
    • If you set the burstable protection bandwidth and basic protection bandwidth to the same value, the maximum mitigation capacity equals the basic protection bandwidth. When DDoS attacks exhaust the basic protection bandwidth, no additional bandwidth resources are provided to mitigate the attacks and therefore no bill is generated.
    • If you set the burstable protection bandwidth to a value higher than the basic protection bandwidth, Anti-DDoS Pro is capable of mitigating DDoS attacks between the basic protection bandwidth and burstable protection bandwidth in size. The amount of bandwidth that exceeds the basic protection bandwidth is billed based on the daily peak value minus the basic protection bandwidth.
    Clean Bandwidth Specify the clean bandwidth based on your needs. Minimum value: 100 Mbit/s

    Set the clean bandwidth to a value that is greater than the peak value of the inbound or outbound traffic of your workload protected by the instance, whichever is higher. For more information, see Clean bandwidth.

    Warning When the volume of the traffic received or sent by your instance exceeds the clean bandwidth, packet loss may occur or the server performance may degrade. We recommend that you increase the clean bandwidth to resolve these issues.
    Function Plan Select a function plan for the instance. Function plans:
    • Standard Function
    • Enhanced Function

    For more information, see Function plan.

    Domains Specify the number of domain names that the instance can protect. The number of domain names increases and decreases by 10. Minimum value: 50 (default). Maximum value: 200.

    The domains specified for the instance can be subdomains and wildcard domains. The number of unique top-level domains corresponding to the subdomains and wildcard domains must not exceed "Domains/10".

    For example, the default value of the Domains parameter is 50. This means that the Anti-DDoS Pro instance can protect up to five different top-level domains. You can specify no more than 10 domains (subdomains and wildcard domains) for each top-level domain. The total sum of subdomains and wildcard domains must not exceed 50.

    If top-level domains example1.com and example2.com are specified, subdomains www.example1.com and abc.example2.com, and wildcard domain *.example1.com are allowed.

    If more than 50 domain names or 5 top-level domain names require protection, you can increase the value of Domains.

    For more information, see Domains.

    Clean QPS Select the maximum number of HTTP and HTTPS requests that the instance can concurrently process per second when the instance is not under attack.. Minimum value: 3000 (default).
    Ports Select the number of TCP and UDP ports that the instance can protect. Minimum value: 50 (default).
    Quantity Select the number of instances with the current specifications that you want to purchase.
    Duration Select a subscription duration for the instance.

    If you select Auto renewal, the instance is automatically renewed before the subscription expires.

    • Monthly subscription: The instance is automatically renewed for one month.
    • Annual subscription: The instance is automatically renewed for one year.
  3. Confirm the configurations and click Buy Now.
  4. Confirm your order and complete the payment.

Purchase an Anti-DDoS Premium instance

  1. Go to the buy page of Anti-DDoS Premium and log on with your Alibaba Cloud account.
  2. Configure an Anti-DDoS Premium instance based on your business needs.Buy page
    Parameter Description
    Product Type Anti-DDoS Premium is selected by default.
    Mitigation Plan Anti-DDoS Premium provides three types of mitigation plan. Mitigation plans:
    Clean Bandwidth Specify the clean bandwidth based on your needs. Minimum value: 100 Mbit/s

    Set the clean bandwidth to a value that is greater than the peak value of the inbound or outbound traffic of your workload protected by the instance, whichever is higher. For more information, see Clean bandwidth.

    Warning When the volume of the traffic received or sent by your instance exceeds the clean bandwidth, packet loss may occur or the server performance may degrade. We recommend that you increase the clean bandwidth to resolve these issues.
    Function Plan Select a function plan for the instance. Function plans:
    • Standard Function
    • Enhanced Function

    For more information, see Function plan.

    Domains The number of domain names that the instance can protect. The number of domain names increases and decreases by 10. Minimum value: 10 (default). Maximum value: 200.

    The domains specified for the instance can be subdomains and wildcard domains. The number of unique top-level domains corresponding to the subdomains and wildcard domains must not exceed “Domains/10".

    For example, the default value of the Domains parameter is 10. This means that the Anti-DDoS Pro instance can protect only one top-level domain. You can specify no more than 10 domains (subdomains and wildcard domains) for the root domain. The total sum of subdomains and wildcard domains must not exceed 50.

    If top-level domain example1.com is specified, subdomain www.example1.com and wildcard domain *.example1.com are allowed.

    If more than 10 domain names or 1 top-level domain name require protection, you can increase the value of Domains.

    For more information, see Domains.

    Clean QPS The maximum number of HTTP and HTTPS requests that the instance can concurrently process per second when the instance is not under attack. Minimum value:
    • Insurance plan: 500 (default)
    • Unlimited plan: 1000 (default)
    Ports The number of TCP and UDP ports that the instance can protect. Minimum value: 5 (default).
    Quantity Select the number of instances with the current specifications that you want to purchase.
    Subscription Select a subscription duration for the instance.

    If you select Auto renewal, the instance is automatically renewed before the subscription expires.

    • Monthly subscription: The instance is automatically renewed for one month.
    • Annual subscription: The instance is automatically renewed for one year.
  3. Confirm the configurations and click Buy Now.
  4. Confirm your order and complete the payment.

Purchase an Anti-DDoS Premium MCA plan

  1. Go to the buy page of Anti-DDoS Premium and log on with your Alibaba Cloud account.
  2. Specify the specifications of the Anti-DDoS Premium MCA plan based on your business needs.
    Parameter Description
    Product Type Anti-DDoS Premium is selected by default.
    Mitigation Plan Select MCA
    Clean Bandwidth Specify the clean bandwidth based on your needs. Minimum value: 100 Mbit/s

    Set the clean bandwidth to a value that is greater than the peak value of the inbound or outbound traffic of your workload protected by the instance, whichever is higher. For more information, see Clean bandwidth.

    Warning When the volume of the traffic received or sent by your instance exceeds the clean bandwidth, packet loss may occur or the server performance may degrade. We recommend that you increase the clean bandwidth to resolve these issues.
    Quantity Select the number of instances with the current specifications that you want to purchase.
    Subscription Select a subscription duration for the instance.

    If you select Auto renewal, the instance is automatically renewed before the subscription expires.

    • Monthly subscription: The instance is automatically renewed for one month.
    • Annual subscription: The instance is automatically renewed for one year.
  3. Confirm the configurations and click Buy Now.
  4. Confirm your order and complete the payment.

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