Enterprise software modernization beyond the demo

Enterprise software modernization should focus on preserving customer-critical behavior rather than merely generating large code patches, with clearly defined targets, reviewable implementation records, representative inputs, integration boundaries, exceptions, and rollback plans. Comarch’s case study reports substantial reductions in estimated migration timelines using Factory, including a 45-day XSLT modernization compared with a 10,000-person-day estimate, a database migration completed in six hours against a 45-day estimate, and an airline MVP delivered in one week rather than an estimated 18 months, though these examples are separate projects rather than controlled performance benchmarks. Factory’s Missions architecture divides work among orchestration, bounded implementation, and independent validation, requiring validation contracts and reproducible checks before changes are approved. Human engineers retain decision-making authority and review work produced during background “night shift” execution, while production data access and release permissions should remain separate from task execution. The account also highlights You.com’s use of isolated Docker testing to identify an MCP timeout as a client-side issue, illustrating the value of reproducible investigations. Teams are encouraged to begin with a limited modernization slice, measure accepted results and reviewer effort, and expand the workflow only when validation supports doing so.

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