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Elastic and secure virtual cloud servers to cater all your cloud hosting needs.

Latest Updates

7th Gen ECS

Alibaba Cloud 7th Gen ECS Is now available, fully equipped with TPM chips and increase instance computing power by up to 40%.

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ECS Offers for New Users

Take advantage of discounts up to 85% off on orders for new users and make the first purchase of yearly subscription of Simple Application Servers at a price of USD 19.9.

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Free Trial >

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

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Advanced Computing Performance

Alibaba Cloud Elastic Compute Service (ECS) provides fast memory and the latest CPUs to help you to power your cloud applications and achieve faster results with low latency.

Deploy ECS instances with just a few clicks from the easy-to-use console and scale capacity up or down based on real-time demands.

High Availability

Alibaba Cloud ECS provides the highest SLA commitment for both single instance and multiple instances in multiple availability zones among the top cloud providers worldwide. Alibaba Cloud gained lots of experience of running infrastructure at large scale while maintaining high availability. We are currently supporting the world's largest e-commerce platforms such as Taobao and Tmall and we work closely with scientists from DAMO Academy to accurately predict, prevent and mitigate infrastructure issues without impacting our customers.

Technology Leadership

On top of the world-class customized components from our various vendors, Alibaba Cloud invested heavily on the Research & Development of our ECS product. Over the time, we developed X-Dragon compute platform, including the self-developed SOC, hardware acceleration card, as well as the Dragonfly lightweight hypervisor.Our Technology leadership provides a foundation for the high performance, availability, elasticity, scalability and security you enjoyed in our ECS products.


As the largest cloud provider in China and the 3rd largest cloud provider worldwide by revenue , Alibaba Cloud ECS has the scale to provide high elasticity that can meet your business needs instantly. We can provide hundreds of thousands of vCPUs in minutes for a single customer in a single region, that is because of our sophisticated smart placement algorithm, dynamic and automatic planing as well as our optimization of both hardware and software.


  • High Availability

    Alibaba Cloud adopts more stringent IDC standards, server access standards, and O&M standards to ensure data reliability and high availability of the cloud computing infrastructure and ECS.

  • Security

    Alibaba Cloud has passed a host of international information security certifications, such as ISO 27001 and MTCS, which demands strict confidentiality of user data and user information, as well as user privacy protection.

  • Elasticity

    Elasticity is a key benefit of cloud computing. Alibaba Cloud provides elastic computing, storage, networking, and business architecture planning and allows you to combine your businesses as needed.

  • Reliable

    Alibaba Cloud ECS offers an industry-leading SLA, with a commitment of 99.975% availability for individual instances and a commitment of 99.995% availability for multiple zones within the same region.

  • Flexible Billing Methods

    ECS provides multiple billing methods to cater to the cost-effectiveness requirements in different scenarios. Annual/monthly subscription, Pay-As-You-Go, Real time bidding subscription, Reserved instance. Exclusive network bandwidth billing methods are also provided to help you save more on resources.

  • Deploy and Grow Globally

    Choose from 25 international regions with multiple availability zones in each region and manage all regions from a single global account.

Product Updates

      More updates >

      Explore Solutions for Your Business

      SAP on Alibaba Cloud

      SAP on Alibaba Cloud

      Alibaba Cloud has SAP certifications for a range of ECS instances

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      Gaming Solution

      Gaming Solution

      Stay flexible and reactive to the real-time needs of your business with ECS

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      Hybrid Cloud

      Hybrid Cloud

      ECS provides fast memory and the latest CPUs to power your cloud applications

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      IT Service Providers

      IT Service Providers

      Scale your resources on demand with our high-performance ECS

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      Featured Customer Success Stories

      Upgraded Support For You

      1 on 1 Presale Consultation, 24/7 Technical Support, Faster Response, and More Free Tickets.

      1 on 1 Presale Consultation

      Consulting by experienced cloud experts.Learn More

      24/7 Technical Support

      Extended service time from 10 hours 5 days a week to 24/7. Learn More

      6 Free Tickets per Quarter

      The number of free tickets doubled from 3 to 6 per quarter. Learn More

      Faster Response

      Shorten after-sale response time from 36 hours to 18 hours. Learn More

      ECS Features

      Features that meet your needs in every scenario

      Flexbile Puchasing Options

      ECS provides flexible purchasing models such as subscription model, pay as you go, reserved instances, as well as preemptible instances to meet your different business needs.

      Auto Scaling >

      You can make an Autoscaling group and your ECS instances in the group can automatically scale-out or scale-in according to the metrics or triggers or your choice such as CPU utilization or network utilization.

      Auto Provisioning

      Auto Provisioning makes it easier for you to take advantage of preemptible instances. It will automatically pick the instances across instance families, availability zones and purchasing models according to your strategy such as 'lowest cost' and utilize preemptible instances as much as possible to maintain you ECS fleet at your desired capacity.

      CPU options

      ECS allows you to turn off hyperthreading that is beneficial to certain workloads such as HPC. ECS also allows you to shut down certain amount of vCPUs in order to save licensing costs.

      Dedicated Host Clusters

      ECS provides Dedicated Host Clusters (DDH) so that the physical servers are dedicated to you without other tenants on it. You can place your virtual machines onto those servers according to your needs.

      Rely on Alibaba Cloud's Worldwide Data Centers

      Alibaba Cloud has 80 zones strategically located across 25 regions in the world, providing reliable computing support for billions of customers.

      • No.1

        Market Share in Asia Pacific

        IaaS and IUS Market Share - Gartner IT Service Report 2019

      • 25

        Global Data Center regions
      • 2,800 +

        CDN Nodes around the Globe
      • 80

        Available Zones


      US East


      US West
















      China (Hong Kong)


      China North


      China South


      China East






      China West



      Data centers and availability zones


      Alibaba Cloud Marketplace includes a set of free and commercial software from global famous vendors that you can run on your ECS instances. Explore Marketplace


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      Fortinet FortiGate (PAYG) NGFW (HA Supported)

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      Windows Server 2016 with SQL Server 2016 Standard

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      Microweber CMS

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      Operating Systems

      Public images are licensed by Alibaba Cloud, which are highly secure and stable. Public images include Windows Server system images and mainstream Linux system images. For more information, see Public image overview

      Alibaba Cloud Linux


      Red Hat Enterprise Linux 8 64bit

      From $ 43.000 USD/month


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      SUSE Linux Enterprise Server for SAP Applications 12 SP2

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      What is Elastic Compute Service (ECS)?

      Elastic Compute Service (ECS) is a high-performance, stable, reliable, and scalable IaaS-level service provided by Alibaba Cloud. It is more convenient and efficient compared with physical servers. You can immediately acquire ECS instances and scale computing resources on-demand. ECS provides a variety of instance types that suit various business needs and help boost business growth.

      Are fees still incurred after a pay-as-you-go ECS instance is stopped automatically due to an overdue payment or is manually stopped?

      When the payment for a pay-as-you-go instance becomes overdue, the instance is automatically stopped and taken out of service.

      You can stop a running pay-as-you-go instance in the ECS console or by calling the StopInstance operation. When the instance is stopped, its status changes to Stopped. Billing of pay-as-you-go instances in the Stopped state depends on their network types.

      • VPC: The No Fees for Stopped Instances (VPC-Connected) feature takes effect on pay-as-you-go instances in VPCs. After the feature is enabled, pay-as-you-go instances in VPCs start being billed when they are created, stop being billed when they enter the Stopped state, and resume being billed when they are started again. With the feature enabled, the vCPUs, memory, and public IP addresses of a VPC-type ECS instance in the Stopped state will not incur any additional costs, but its data disks will continue to be billed. For more information, see No fees for stopped VPC instances.
      • Classic network: ECS instances in classic networks will continue to be billed, even when they are in the Stopped state.

      To which types of ECS instances is the No Fees for Stopped Instances (VPC-Connected) feature applicable?

      The No Fees for Stopped Instances (VPC-Connected) feature is applicable to ECS instances that meet the following requirements:
      • The network type of the instances is VPC.
      • The instances use the pay-as-you-go billing method.
      • The instances do not use local disks.

      I have set Stop Mode to No Charges After Instance Is Stopped when stopping an instance. When I start this instance again, its public IP address changes. How do I keep the IP address from changing?

      When an instance enters the No Fees for Stopped Instances state, its public IP address is released. When the instance is started again, it is assigned a new public IP address.

      To retain the original public IP address of the instance, you can convert the IP address to an Elastic IP Address (EIP) before you stop the instance. For more information, see Convert an ECS public IP address in a VPC to an Elastic IP Address and ConvertNatPublicIpToEip.

      Notice: After the IP address is converted to an EIP, you will be charged for the EIP while the instance is in the No Fees for Stopped Instances state. For more information, see Billing method of the EIP documentation.

      Why has a pay-as-you-go bill been generated for my instance? What are the fees on the bill? You can copy your instance ID and perform the following steps to view the bill details:

      1.Log on to the ECS console.

      2.In the top navigation bar, choose Billing > User Center.

      3.In the left-side navigation pane, choose Spending Summary > Instance Spending Detail.

      4.Set the search criteria.

      How are enhanced SSDs billed?

      Enhanced SSDs support both subscription and pay-as-you-go billing methods. For more information, visit the Pricing page.

      How is the public network usage of ECS instances billed?

      For details, see Billing of Internet bandwidth.

      For more information, see Pricing FAQ.

      What are enterprise-level instances? What are entry-level instances?

      Enterprise-level instances are a series of instance families released by Alibaba Cloud in September 2016. Enterprise-level instances feature high performance, consistent computing power, and balanced network performance. These instances have exclusive and consistent computing, storage, and network resources, and are suitable for enterprise scenarios with high business stability requirements.

      Enterprise-level instances use a CPU-bound scheduling scheme. Each vCPU is bound to a CPU hyperthread. Instances do not compete for CPU resources and provide consistent computing performance as guaranteed in the SLA.

      Entry-level instances are a series of instance families that are targeted at small and medium-sized websites or individuals. Compared with enterprise-level instances that have exclusive resources, entry-level instances share resources. Therefore, entry-level instances do not provide consistent computing performance but they have a lower cost.

      Entry-level instances use a CPU-unbound scheduling scheme. Each vCPU is randomly allocated to an idle CPU hyperthread. vCPUs of different instances compete for CPU resources. This results in fluctuations in computing performance when traffic loads are heavy. Entry-level instances can only guarantee availability. They cannot guarantee the performance that may be required in the SLA.

      How do I check whether instances are available for purchase in a specific region or zone?

      You can go to the ECS Instance Types Available for Each Region page to view the instance types available in each region.

      How do I select an ECS instance that is suitable for my business?

      • Determine your business requirements.
      • Determine your website type.
      • Determine the average number of page views per day on your website.
      • Determine the size of your homepage.
      • Determine the data capacity of your business.

      How do I view GPU monitoring data?

      You can log on to the CloudMonitor console or call the DescribeMetricList operation to view GPU monitoring data. For more information, see GPU monitoring.

      What are the differences between ECS Bare Metal Instances, traditional cloud hosts (virtual machines), and traditional physical machines?

      For information on the differences, see ECS Bare Metal Instance.

      How do I create an SCC instance?

      You can create an SCC instance in one of the following ways:
      • If you only need to use RDMA, log on to the ECS console to create an SCC instance.
      • If you need to use the HPC scheduler and cluster resizing service in addition to RDMA, log on to the E-HPC console. Create an SCC and then create an SCC instance.

      To what resources are the preemptible instance prices applicable?

      The preemptible instance prices are applicable only to instance types. Other instance resources, such as system disks, data disks, and network bandwidth, are billed at the same rates as those of pay-as-you-go instances.

      How do I bid for a preemptible instance?

      To create a preemptible instance, you must set the highest hourly price you are willing to pay for an instance type. If your bid is higher than or equal to the current market price, your instance is created and billed based on the current market price. For more information, see Create a preemptible instance.

      How many preemptible instances can be purchased under one account?

      There is a limit on the maximum number of vCPUs that can be allocated to preemptible instances for each account. When you create a preemptible instance, you can view the number of available vCPUs after you select an instance type. For more information, see Instance limits.

      What is a reserved instance?

      Reserved instances automatically match pay-as-you-go instances, excluding preemptible instances, in your account to provide a billing discount. Reserved instances can also be used to reserve resources for pay-as-you-go instances. A combination of reserved instances and pay-as-you-go instances provides a similar cost-effectiveness to subscription instances but with a higher degree of flexibility.

      Which instance families do reserved instances support?

      Reserved instances support the following instance families: sn1ne, sn2ne, se1ne, ic5, c5, g5, r5, c6, g6, r6, i2, i2g, hfc5, hfg5, and t5.

      Reserved instances matching t5 burstable instances are only available at the zone level. These reserved instances cannot be merged or split, and their scopes cannot be changed.

      How are reserved instances billed?

      Reserved instances are billed separately and support the All Upfront, Partial Upfront, and No Upfront payment options.

      The term of a reserved instance starts immediately after purchase. You are charged based on your selected payment option regardless of whether the reserved instance matches pay-as-you-go instances. The All Upfront option is the most cost-effective.

      What can I do if I forget the password for remote connection?

      You can reset your password for remote connection. For more information, see Connect to a Linux instance by using the Management Terminal.

      How do I remotely log on to a Linux instance?

      Linux instances use SSH for remote connection. You can use one of the following methods to remotely log on to a Linux instance:
      Connect to a Linux instance by using the Management Terminal.
      Connect to a Linux instance by using a password.
      Connect to a Linux instance by using an SSH key pair.
      Connect to an instance on a mobile device.

      How do I apply for an ICP filing for my domain name after purchasing an ECS instance?

      You can apply for a limited number of ICP filing service numbers for each ECS instance. For more information, see Prepare and check the instance.
      For information about how to apply for an ICP filing, see Quick Start.

      Can an ECS instance be used for load balancing?

      ECS Linux and Windows instances can be used for load balancing. You must ensure that the configurations of ECS instances serving as Web servers meet the requirements for website code to run. Load balancing can be implemented with as few as one ECS instance under an account. However, we recommend you use two or more ECS instances for load balancing.

      What security services does Alibaba Cloud provide?

      Alibaba Cloud Security is powered by the robust data analysis capabilities of the Alibaba Cloud cloud computing platform to provide a comprehensive set of security services, such as security vulnerability detection, website trojan detection, host intrusion detection, and DDoS protection.
      For information about more security services, see Security.

      How can I view the resource quota?

      For more information about how to view the limits and quotas of resources, see Limits.

      What are the advantages of Aliyun Linux 2 compared with other Linux operating systems?

      Aliyun Linux 2 is binary compatible with CentOS 7.6.1810 and provides differentiated operating system features.

      Compared with CentOS and RHEL, Aliyun Linux 2 has the following advantages:
      • Updates are released at a faster pace. Updated Linux kernels, user-mode software, and toolkits are provided.
      • Aliyun Linux 2 works out of the box and requires the minimal configuration.
      • Aliyun Linux 2 is optimized to work with the optimized hypervisor and maximizes performance for users.
      • Aliyun Linux 2 has no runtime charges compared with RHEL and is provided with commercial support compared with CentOS.

      How do I use Aliyun Linux 2 in Alibaba Cloud public cloud?

      Alibaba Cloud provides an official public image for Aliyun Linux 2. You can select this image when you create an ECS instance.

      Can I use a custom image across regions?

      No, a custom image can be used only within a single region. For example, a custom image created from an instance in the China (Hangzhou) region cannot be used to create an ECS instance in the China (Shanghai) region.
      If you want to use a custom image across regions, copy the image to the destination region. For more information, see Copy custom images.

      How do I clone an ECS instance?

      You can clone the environment and data of an existing ECS instance under your account to create identical ECS instances within the same region.

      1. Select the ECS instance that you want to clone and create snapshots for its system disk and data disks. For more information, see Create a snapshot.
      Note: To ensure data consistency, only create snapshots when the instance is in the Stopped state.

      2. Use the system disk snapshot to create a custom image. In the Create Custom Image dialog box, select Add Data Disk Snapshot and click Add to add one or more data disk snapshots to the image. For more information, see Create a custom image from a snapshot.

      3. Create an ECS instance by following the instructions in Create an instance by using the provided wizard. During the creation process, note the following items:
      o Region: You must select the same region as that of the cloned instance.
      o Image: Select Custom Image as the image type. Then, select the custom image you created in the previous step from the drop-down list.
      Note: If the selected custom image contains one or more data disk snapshots, an equal number of data disks are automatically created from these snapshots. Each disk has the same size as the snapshot from which it is created. You can increase the size of a data disk but cannot decrease it.

      In addition, you can use OOS to perform automatic cloning:
      • In different regions for the same account, you can use the ACS-ECS-CloneInstancesAcrossRegion public template to perform cross-region cloning.
      • In the same region for the same account, you can use the ACS-ECS-CloneInstancesAcrossAZ public template to perform cloning within a region.

      When do I need to copy a custom image?

      Custom images can only be used within the same region and cannot be used directly across regions. You can copy custom images to achieve the following goals:
      • Deploy applications in ECS instances to multiple regions.
      • Migrate ECS instances to other regions.
      • Use custom images across regions.

      You can copy a custom image from one region to another and use the custom image to create the same application environment within the destination region.

      How am I charged when I copy a custom image?

      You must perform the following operations to copy a custom image:
      1. Copy the snapshot from which the custom image is created from the source region to the destination region.
      2. Create a custom image from the snapshot copy in the destination region.

      The preceding operations may incur the following fees:
      • Fees for traffic between the two regions. Alibaba Cloud has not started charging for cross-region traffic yet. For the latest billing details, see the official Alibaba Cloud website for announcements.
      • The copied snapshot consumes snapshot capacity. For the latest snapshot billing details, see the official Alibaba Cloud website for announcements.

      How do I copy the images under my Alibaba Cloud account to other regions under other Alibaba Cloud accounts?

      You must copy your own images to the destination regions and then share the images to the intended Alibaba Cloud accounts.