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    Simple Application Server:Usage notes

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    Simple Application Server:Usage notes

    Last Updated:Aug 01, 2025

    This topic describes usage notes, which ensures that you can smoothly deploy and use applications in Simple Application Server.

    Usage notes

    • Simple Application Server is suitable for scenarios in which the load is low in most cases but may burst, such as scenarios in which small web applications or lightweight applications are deployed. You may need other instance types that deliver high CPU performance to handle high-load tasks such as deploying large applications or encoding videos. In these cases, we recommend that you use Elastic Compute Service (ECS) instances. For more information, see What is ECS?

    • Simple Application Server allows you to upgrade resources. For more information, see Upgrade a simple application server.

    • Do not use simple application servers for traffic penetration. Violations may cause your simple application servers to be stopped, locked, and released.

    • The public bandwidth is the maximum rate of inbound or outbound Internet data transmission. This metric is not guaranteed. During peak hours, if resource contention occurs, bandwidth may be limited, and packet loss may occur. Simple application servers are not suitable for scenarios with strict requirements for Internet connection quality. If your business requires high-quality Internet connections, we recommend purchasing Elastic Computing Service (ECS) instances that use pay-by-bandwidth billing.

    ICP filing notes

    • Before you use a simple application server that is deployed inside the Chinese mainland to host your websites, you must apply for an ICP filing for the server. For more information, see What is an ICP filing?

    • If you use a simple application server that is deployed outside the Chinese mainland to host your websites, you do not need to apply for an ICP filing.

    • For information about ICP filing applications, see ICP filing process.

    • An ICP filing number is used to associate your application server with the website that you want to host on the server when you submit an ICP filing application in the Alibaba Cloud ICP Filing system. For more information, see Apply for service identification numbers for free. When you apply for service identification numbers, take note of the following items:

      • Starting May 21, 2018, the application server for which you want to apply for an ICP filing must be subscribed to for at least three months. The subscription duration includes the renewal duration.

      • A public IP address of a simple application server can be associated with up to five service identification numbers, which can be used for five ICP filing applications. An ICP filing for a website requires a service identification number. You cannot reuse the service identification number to apply for an ICP filing for another website. If you deregister the website or remove Alibaba Cloud from your cloud service provider list, the service identification number is still considered used. You cannot reuse the service identification number to apply for an ICP filing for another website.

      • The following list describes the number of domain names that you can associate with a service identification number.

        • If no service identification number is issued for your entity and the domain names of your website, you can submit up to five websites and multiple domain names for each website.

        • If a service identification number is issued for your entity and the domain names of your website and you want to associate new domain names with the existing service identification number, only submit one domain name for each website. You can submit multiple websites in multiple ICP filing applications. For example, if the ICP Bei # 1200000 - 1 service identification number is associated with multiple domain names and you add one of the domain names to the new ICP filing application, after this domain name is approved in the Alibaba Cloud ICP Filing system, other domain names that are associated with the ICP Bei # 1200000 - 1 service identification number are automatically approved. After the ICP Bei # 1200000 - 1 service identification number is submitted, you can continue to submit another service identification number.

      • If an unfiled domain name is used to launch a website, you must shut down the website based on the relevant regulations and apply for an ICP filing.

      • If you have obtained a service identification number from another cloud service provider, you must transfer the ICP filing to Alibaba Cloud. After your application to transfer the ICP filing is approved by the communications administration, you can launch your websites. You must complete the transfer procedure within 30 days. Otherwise, your websites remain inaccessible.

    References

    • For information about the limits of Simple Application Server, see Limits.

    • For information about the billing of Simple Application Server, see Billing of data transfers.

    • For information about the refund policy and unsubscription procedure of Simple Application Server, see Refund policy.