Solution · Legacy replacement
Retire one brittle dependency without losing what works.
Turn the running system into testable behavior, decide what to preserve or change, and move through cutover with rollback and acceptance controls.
The running system shows what the mission actually depends on: workflows, edge cases, integrations, and business rules that documentation may miss. We compare that behavior with current policy, user needs, known defects, and the goals for the replacement.
Record which behavior to keep, fix, retire, or clarify. Copying every historical accident would defeat the purpose of the replacement.
For each increment, state what behavior will change, how it will be tested, and how cutover, rollback, reconciliation, and recovery will work. Reusable tooling can speed analysis and migration without moving protected material outside the approved customer environment.
Measure the behavior the replacement must preserve
Scenario tests, reconciled outputs, integration behavior, accessibility, operating telemetry, cutover rehearsals, and recovery results show whether the replacement is safe to use.
Complete delivery also covers the work from acquisition through closeout. Legacy replacement starts with discovering behavior and controlling transition risk.
We have seen the old systems up close
Our staff has modernized and reworked production systems built on mainframes, legacy Java platforms, Perl and PHP applications, XML-heavy integration layers, batch jobs, and proprietary stacks.
The pattern is familiar: the code still runs the business, but the people, tools, deployment model, and vendor ecosystem around it have moved on. A legacy system can be messy; it still needs to be observable, testable, and honest about what it actually does.
A Complete Modernization Solution
Custom analysis tooling
We build tools for the codebase to map dependencies, identify dead code, interpret proprietary languages or frameworks, and document observed behavior. AI can widen the analysis; experienced engineers review the conclusions and remain accountable for them.
Behavior baseline and acceptance tests
Before major replacement work begins, we build tests around what the legacy system actually does. Documentation informs the work, while observed behavior supplies the verification baseline. The tests inform acceptance criteria agreed with the customer. Contractual acceptance remains with the customer's designated official.
AI-assisted migration
With the test suite as a guardrail, AI assists translation to a modern stack. Automated checks and targeted human review validate behavior. Custom analysis tooling, tests, staged cutover, and recovery planning keep the migration bounded and measurable while recognizing that operational and human consequences are not always reversible.
Authorization, deployment, and transition
We deploy the replacement in the approved environment using the simplest architecture that meets the mission. When constraints allow, that may be a compact single binary. Source access, operating and transition rights, and background IP are defined in the agreement under applicable clauses. We prepare material for security, privacy, applicable Section 508, acceptance, deployment, recovery, and transition reviews; coordinate those reviews; and fix findings within scope. Authorized Government officials make authorization and acceptance decisions. Any later increment requires a separate Government decision.
Why this supports speed without shortcuts
Interviews and documents matter, but they can miss behavior embedded in years of production use. We treat the running system as a primary source and reconcile it with policy, users, defects, integrations, and the intended mission. That comparison reduces late discovery and rework. Security, accessibility, operational review, and Government acceptance remain required.