System Modernization. Legacy code to modern cloud-native, shipped in stages with zero downtime.

Depends on legacy scope. A single legacy app with 50k lines of code and 20 routes typically takes 6 to 12 months end to end. A multi-app enterprise legacy estate with 500k plus lines and 200 plus routes typically takes 18 to 36 months. We do not promise faster timelines because rushed modernizations produce another legacy system in 5 years. Our roadmaps are paced to your engineering capacity, not to optimistic vendor promises.

Two patterns. Dual-write: application writes to both old and new database during migration, with read traffic shifted route by route. Change-data-capture: tools like Debezium or AWS DMS stream changes from old to new database, application read traffic shifts when caught up. Both require careful idempotency and conflict-resolution design. Selection depends on database type, transaction volume, and downtime tolerance. Zero downtime is achievable in nearly all cases with proper engineering.

No, not by default. Latest framework is rarely the right answer. We pick the target stack based on your team's hiring market, your existing skills, your operational maturity, and the application's actual needs. For most clients that is Node plus TypeScript or Python plus FastAPI on AWS or GCP with Postgres. Sometimes it is Go or .NET 8. Rarely is it the framework that launched 6 months ago. We optimise for boring, hireable, and supportable.

Decompose by route, ship continuously, validate in production. Specifically: Strangler Fig routing for instant rollback, feature flags for granular control, shadow traffic to validate new code without affecting users, canary deployments for early signal, dual-write for database migrations, and 30 to 60 day soak periods before legacy retirement. Plus quarterly steering committee reviews with the business so the roadmap stays aligned with changing priorities.

Yes. We architect the modernization so the legacy codebase keeps accepting new features in parallel. Critical bug fixes ship to legacy until that route migrates. New features land on the new stack if the route has been migrated. Feature freeze on legacy is sometimes useful for the last 20 percent of migration but is never a hard requirement. We have run modernizations where the product team shipped 30 plus features during the 18-month migration.

Modernization is expensive upfront and pays back via reduced infrastructure cost, reduced support cost, faster feature velocity, and unlocked hiring. Typical payback for a $500k to $1M modernization is 18 to 30 months. We build the business case during scoping with your finance team so the ROI is defensible. We do not push modernization on clients where the legacy still has 5 plus years of useful life and no critical pain points.

Yes. We have migrated .NET Framework 4.x to .NET 8, classic ASP and ASP.NET WebForms to modern frameworks, legacy PHP (5.x, 7.x with custom frameworks) to Laravel or Node or Python, and Rails 3 and 4 monoliths to modern Rails or Node services. Reverse engineering legacy business logic is part of the engagement. We document what we discover so the knowledge does not stay locked in the legacy code.