This topic describes how to apply for License Mobility through Software Assurance. If you plan to use an ECS dedicated host or purchase a license provided by Alibaba Cloud, skip this topic.
Background information
As an Authorized Mobility Partner of Microsoft, Alibaba Cloud accepts the licenses of any products covered in active Software Assurance contracts. You can send an application to Microsoft to migrate your license and continue to use it in Alibaba Cloud as a Bring Your Own License (BYOL).
If you want to continue using your existing licenses through License Mobility, make sure that the following conditions are met:
- Your Microsoft licenses must be covered with Software Assurance. For more information, visit Software Assurance overview.
- The Microsoft products must support License Mobility agreements. The following list
provides some Microsoft products that are eligible for License Mobility:
- Exchange Server.
- SharePoint Server.
- SQL Server Standard Edition.
- SQL Server Enterprise Edition.
- Skype for Business Server.
- System Center Server.
- Project Server.
- Visual Studio Team Foundation Server.
- BizTalk Server.
- Remote Desktop Services.
- For a full list of eligible Microsoft products, visit Licensing terms.
- Eligible Volume Licensing programs include the Enterprise Agreement, Enterprise Subscription Agreement, and Microsoft Open Value Agreement, where Software Assurance is included, as well as other Volume Licensing programs where Software Assurance is an option, such as Microsoft Open License or Select Plus.
- The licenses cannot be applied to Windows client operating systems such as Windows Server or desktop applications such as Microsoft Office.
Procedure

What to do next
- Reallocate these licenses to other ECS instances in the same Alibaba Cloud zone. For more information, see Regions and zones.
- Reallocate these licenses to other ECS instances in different Alibaba Cloud zones. However, the interval between two consecutive allocations cannot be less than 90 days. For more information, visit Licensing terms.