Replace what's failing. Keep what works.

We don't start with a discovery phase. Discovery phases exist because the vendor doesn't understand your domain. Our engineers arrive domain-qualified — they've built in your industry, they know your regulatory landscape, they've seen your legacy architecture before. Week one is architecture review and compliance mapping.

Not interviews with your stakeholders to understand what you do. We already know what you do. We need to know what you built and where it breaks. By end of week two, we have an architecture plan that preserves what works, replaces what doesn't, and maps every compliance requirement to a specific technical implementation.

The strangler fig pattern is our standard approach to modernization: we build the replacement system in parallel with the legacy system, migrating functionality and users incrementally until the legacy system can be retired. This approach eliminates the big-bang cutover risk that destroys most modernization programs.

Users move only after agreed readiness evidence is met. Where the system permits it, the legacy and replacement paths operate in parallel with representative transactions, reconciliation, and a tested rollback path.

Compliance continuity through the modernization window requires explicit architecture design. The legacy system has an audit trail. The replacement system must maintain that audit trail without a gap during the transition period. The legacy system has specific access control configurations that satisfy your regulatory framework.

The replacement system must implement equivalent controls — not similar controls, equivalent controls — from the first day it processes regulated data. These requirements are not afterthoughts in our engagements. They are sprint zero deliverables.

At the end of an enterprise modernization engagement, your legacy system is off. Not in parallel. Off. The replacement system is processing your full production workload, maintaining your compliance certifications, integrating with every external system your legacy system connected to, and operating without a support dependency on the modernization vendor. Your team has inherited the system with complete documentation: architecture diagrams, compliance mapping, operational runbooks, disaster recovery procedures, and the Terraform or Helm configurations that define your infrastructure.

The compliance continuity documentation includes the full audit trail of the transition period — every transaction processed by both the legacy and replacement systems during the cutover window, with the evidence that the replacement system applied the same compliance controls. Your regulators can review the transition. The legacy system's audit log and the replacement system's audit log are linked by the transition documentation. There is no compliance gap in the record.