Liberation from Legacy Lock-In

mimicry learns and reveals what your systems actually do - in weeks, not years

Legacy systems power the world’s economy. Decades of business logic, refined over thousands of iterations, keeping operations running 24/7. But these valuable assets have become prisons - new features take months instead of weeks, and engineers dread making changes. After 30 years, no one fully understands what these systems actually do anymore.

How do you escape this innovation trap without risking the business?

Understand Your Legacy Challenge

The Three-Phase Journey

mimicry analyzes

mimicry observes your running system and learns what it actually does - millions of transactions, thousands of rules, every edge case. Works even when source code is unavailable or subject matter experts have left.

You understand

Within weeks, you get an interactive atlas of your real system behavior. Zoom from complete workflows down to individual business rules. See the full dataflow or trace a single transaction through the system. Finally see both forest and trees.

Then change

We deliver an executable specification - a validated, working system in a modern architecture that behaves equivalently to your legacy application. Not built from scratch - derived from what mimicry learned. Same inputs, same outputs, same business rules, but on technology where development is fast again.

The system perfectly reflects the analysis results, giving you complete documentation with direct links between code and behavior. Use it as your new system, adapt it to your specific architecture, or treat it as blueprints for your team. You own it. You decide what’s next.

From complex legacy system to clear behavioral analysis

The Result

Keep What Makes You Reliable

Decades of refined business logic, battle-tested through thousands of iterations

Gain What Makes Startups Fast

Transparent business logic on modern technology providing agility for rapid innovation

No Multi-Year Projects. No Blind Risks.

First understand, then decide.

Comparison of legacy vs modern system benefits

Real System, Real Results

We replaced Inacta’s Java crypto-payment server with one in a different architecture using Go:

Key Metrics:

  • 150 million observations captured complete system behavior
  • Bit-perfect compatibility - no one could tell the difference
  • 1.5 months delivery vs. 4+ months traditional estimate
  • No source code access required
  • Zero business disruption

The new system runs just as fast, uses less memory, and maintains perfect compatibility with all existing interfaces.

Read Full Case Study

inapay system transformation diagram

Start With Understanding

Every transformation begins with clarity. Our analysis process gives you comprehensive behavioral documentation of your system - delivered in weeks, not months or years. Valuable regardless of what you decide next.

Will This Work for Your System?

Concerns we hear:

  • “Our system is too weird or extremely complex”
  • “We don’t have the source code”
  • “The original developers are gone”
  • “Our technology stack is exotic”
  • “The system uses multiple technologies bolted together”

None of these are blockers. If your system runs and you can observe it operating, we can analyze it and deliver a functionally equivalent solution in modern architecture.

Discuss Your Situation

Example behavioral analysis results

De-Risking Your Legacy Challenge

The Low-Risk Approach

  • Analysis delivered in weeks vs. multi-year traditional commitments
  • Value from start - comprehensive behavioral documentation
  • Reduce operational risks - understand what your system does before issues arise
  • Your system keeps running - no business disruption
  • Verified equivalence - new and original systems tested side-by-side with identical inputs
  • Options, not lock-in - choose how to proceed

Low-risk approach diagram

Ready to Break Free?

Stop fighting your legacy systems. Start understanding them.

Get Started