1. A computer implemented method for determining a target logical partition for a migration event of a virtualized process collection at runtime, the computer implemented method comprising: responsive to detecting a violation of a stack tier policy for the virtualized process collection in a source logical partition, examining a stack tier comprising the virtualized process collection to determine a scalability of the stack tier; examining a set of logical partitions to identify target logical partitions for the migration event, wherein the target logical partitions are compatible for migrating the virtualized process collection based on the scalability of the stack tier; analyzing a performance state of the virtualized process collection; and ranking the target logical partitions for selection in the migration event based on the performance states of the virtualized process collection and the stack tier policy.