Migration, coexistence, and interoperability
The goal of migration is to reconstruct the environment of your previous version of WebSphere® Application Server in a Version 8.5 environment. Coexistence allows you to create a mixed-version environment that is not in conflict and allows the nodes of all versions to start and run at the same time. Coexistence also facilitates rollback and allows one or the other version to run at one time. Interoperating is exchanging data between two coexisting product installations or between products on different systems. The distributed operating systems fully support both coexistence and interoperability, which includes migrating to IBM® Cloud.
This topic is about configuration migration, such as migrating deployment managers and federated nodes in a network deployment environment. The Application Migration Toolkit for WebSphere Application Server provides support for migrating applications from previous versions of WebSphere Application Server to the latest product version. For information about migrating applications, read more about the Migration Toolkit.
![[8.5.5.13 or later]](../images/ng_v85513.svg)
![[AIX Solaris HP-UX Linux Windows]](../images/ngdist.svg)
You can migrate your existing WebSphere Application Server Version 7, Version 8, Version 8.5, or Version 9 cells to IBM Cloud. To learn more about migrating to the cloud, see Migration, coexistence, and interoperability.