Techniques for migration for composite nodes in software-defined infrastructures (SDI) are described. A SDI system may include a SDI manager component, including one or more processor circuits, configured to access one or more remote resources, the SDI manager component may include a partition manager configured to receive a request to create a composite node from an orchestrator component, the request including at least one preferred compute sled type and at least one alternative compute sled type. The SDI manager may create a composite node using a first compute sled matching the at least one alternative compute sled type. The SDI manager may determine, based upon a migration table stored on a non-transitory computer-readable storage medium that a second compute sled matching the at least one preferred compute sled type is available. The SDI manager may perform an migration from the first compute sled to the second compute sled. Other embodiments are described and claimed.