This topic describes the billable items of Simple Application Server and billing examples of the service.

Simple Application Server

Note The prices in this topic are for reference only. The actual prices are displayed on the buy page of simple application servers.
Billable item Description Billing method Formula
Plan specifications Include computing resources, storage resources, and network resources. For more information, see Pricing of simple application server plans. Subscription Price of plan specifications × Subscription period
Data disk (optional) If you mount a data disk to your simple application server, you must pay for the data disk based on its capacity.
Note Only enhanced SSDs (ESSDs) of performance level 0 (PL0) and standard SSDs can be used as data disks of simple application servers.

The prices of disks of the same category may vary with regions. You can go to the Pricing tab of the Elastic Compute Service product page and click the Storage tab to view the prices of disks in different regions.

Subscription Unit price of the data disk × Capacity of the data disk × Subscription period
Excess data transfers (optional) A plan contains a monthly data transfer quota. After the data transfer quota is used up, you are charged for the excess data transfers based on the pay-as-you-go billing method.

For information about the unit price of excess data transfers, visit the Simple Application Server Pricing page.

Note
  • Data transfers in Simple Application Server refer to outbound data transfers. You are not charged for inbound data transfers.
  • Alibaba Cloud resets the data transfer quota for a simple application server on the first day of each calendar month. After the quota is reset, the server starts to calculate the data transfers for the month.
  • Some plans do not contain monthly data transfer quotas. For example, a plan that contains 1 vCPU, 1 GB memory, 1 Mbit/s bandwidth, and a 20 GB standard SSD does not contain a monthly data transfer quota. These plans do not limit on your data transfers.
Pay-as-you-go Unit price of data transfers × Excess data transfers
Snapshot A snapshot is a point-in-time backup of a disk. Snapshots can be used to back up data, recover data after accidental instance releases, recover data after network attacks, and create custom images.
Note You are not charged for creating snapshots. The maximum number of snapshots that you can retain within your account is three times the number of the simple application servers that you have, but cannot exceed 15.
Free of charge None
Custom image A custom image is created from a snapshot of a simple application server. You can use custom images to create multiple simple application servers that have the same configurations. You can also share custom images with ECS and use the shared images to create ECS instances or replace the OSs of existing ECS instances.
Note You are not charged for creating custom images. The maximum number of custom images that you can retain within your account is three times the number of the simple application servers that you have, but cannot exceed 15.
Free of charge None
Service interconnection By default, simple application servers that belong to the same account and region are deployed in the same VPC. These servers can communicate with each other over the VPC free of charge.
Notice If you want to allow simple application servers that belong to different accounts or regions to communicate with each other, go to the Cloud Enterprise Network console. However, you are charged for service interconnection across regions or discounts. For more information, see Billing.
Free of charge None

Billing examples

The following table describes how to calculate the price of using a simple application server in different scenarios.
Example Scenario Price
Example 1: Plan price + Data disk price
The following resources are used to create a simple application server in the following region:
  • Region: China (Hong Kong)
  • Image: CentOS 7.6
  • Plan specifications: USD 3.5/month (standard SSD)
  • Data disk capacity: 20 GB
  • Unit price of data disks in the China (Hong Kong) region: USD 0.187 per GB-month
  • Subscription period: three months

Total price = Plan price × Subscription period + Data disk price × Subscription period

Data disk price = Unit price of data disks × Data disk capacity (GB)

In this example, the total configuration price of the simple application server is USD 21.72, which is calculated based on the following formula: 3.50 × 3 + 0.187 × 20 × 3 = 21.72.

Example 2: Price of excess data transfers
A simple application server that is deployed in the China (Hong Kong) region transfers additional 8 GB of data to the Internet after the data transfer quota in the plan is used up.
  • Excess data transfers: 8 GB
  • Unit price of data transfers: USD 0.153/GB

The price of excess data transfers = Unit price of data transfers × Excess data transfers.

In this example, the price of excess data transfers is USD 1.224, which is calculated based on the following formula: 0.153 × 8 = 1.224.