Systems and methods for modeling a prospective systems migration between server systems are provided. Performance data associated with a plurality of applications in a first server system may be collected. A selection of a set of applications in the plurality of applications to migrate to a second server system may be processed. Combined performance data that estimates how the set of applications will perform on the second server system may be computed using at least some of the performance data. Based on the combined performance data, indications as to whether the set of applications should be migrated to the second server system may be provided.