Quality Measurement Scenarios in Software Migration

Legacy systems are migrated to newer technology to keep them maintainable and to meet new requirements. To aid choosing between migration and redevelopment, a quality prognosis of the migrated software, compared with the legacy system is required. Moreover, as the driving forces behind a migration effort differ, migration tooling has to be tailored according to project-specific needs, to produce a migration result meeting significant quality criteria. Available metrics may not all be applicable identically for both legacy and migrated systems, e.g. because of paradigm shifts during migration. To this end, this paper describes identifies three scenarios for utilizing quality measurement in a migration project.