Turkey Enterprise
Enterprise
Parity-verified legacy modernization. We move legacy systems onto a modern stack and prove, automatically, that the new system behaves exactly like the one it replaced - behavioral parity, on your code, proven before you cut over.
Cardinal rule: prove, never fabricate
Every equivalence claim is produced by a deterministic harness that actually executed both versions and compared their outputs. The LLM derives test cases and writes code; it never emits the verdict. The harness does, from real execution output. A false-pass (certifying a broken migration as equivalent) is the worst possible outcome, and the architecture is built to prevent it.Why modernization stalls
The business logic lives in code no one fully understands, written by people who have left. Teams freeze on a system they can't safely touch, or gamble on a rewrite no one can verify. Roughly 3 in 4 legacy modernization projects fail to land, and the typical integrator rebuild runs $1-3M over 12-24 months with zero guarantees of behavioral equivalence at the end.
L vs M
Throughout the methodology, L is the legacy program (the ground-truth oracle) and M is the modern rebuild. M is verified against L; L is authoritative. We never ask you to trust the rewrite - we replay L's real behavior against M and prove they match.
The approach: capture, rebuild, verify
| Step | Name | What it does |
|---|---|---|
| 01 / Capture | Record the truth | Capture the legacy system's real behavior as ground truth - the system itself, not documentation or memory. |
| 02 / Rebuild | Modernize | An AI build engine with artifact gates and automated QA rebuilds on your target stack. It doesn't get a vote on whether it's right. |
| 03 / Verify | Prove parity | Replay the legacy system's real behavior against the new build, case by case. A rebuild can pass its own tests and still be wrong; parity catches it. |
"Done" isn't our opinion. It's a passing parity check - objective, automated, and yours to audit.
Beyond equivalence: what's broken
A faithful rebuild reproduces the old system exactly, bugs and all - that's the contract: no silent improvements that quietly change what your business runs on. But defects don't hide. Parity surfaces the legacy system's latent flaws (stale regulatory thresholds, silent rounding loss, dropped records) and routes each to a named owner for a signed decision.
| Stage | Name | What it does |
|---|---|---|
| Surface | Find the latent bugs | Flag known-wrong behavior the rebuild faithfully carried forward, independent of any rewrite. |
| Decide | A person rules | Each flag goes to a named owner: reproduce it, fix it, or formally accept it. |
| Record | Signed & auditable | Every ruling is signed and logged. Each deliberate deviation is a decision on the record, not a surprise in production. |
You don't just get a modern system. You get a signed account of every place the old one was wrong.
Parity Proof (self-serve)
The productized teaser. Upload one self-contained legacy program at /enterprise/proof and watch staged progress. The engine analyzes it, rebuilds it on a modern stack, and demonstrates behavioral parity by actually executing characterization tests against both versions in a sandbox.
| Shown immediately (free) | Gated behind email (the deliverable) |
|---|---|
| The analysis: what the program does, language, isolatability verdict. | The modern code: the full M rebuild. |
| The parity report: per-case results, the harness-computed verdict, conformed defects. | A live preview: the modernized program actually running. |
The proof is never gated
Email is captured only the moment the proof has landed and you want the result in hand. The verdict, conformed defects, and an explicit "could not verify" section are always shown free. No verdict is ever asserted by the LLM.Run stages
A public proof run moves through these statuses:
| Status | Meaning |
|---|---|
queued | Accepted, waiting for a worker. |
triaging | Classifying the program and its isolatability. |
characterizing | Deriving characterization test cases from L. |
modernizing | Rebuilding on a modern stack (M). |
verifying | Harness executes L and M, compares outputs, computes the verdict. |
scanning | Source-only conformed-defect scan. |
complete | Proof persisted (or failed). |
Engagements (managed)
Beyond the single-program proof, a full engagement modernizes one legacy system end to end through the deterministic engine, with human sign-off. The lifecycle:
| Status | Meaning |
|---|---|
queued | Engagement created. |
capturing | Capturing L's real behavior (the oracle). |
modernizing | TurkeyCode builds M on the chosen target. |
verifying | Proving M is equivalent to L. |
converging | Closing remaining gaps until coverage is sufficient. |
awaiting_signoff | Owner reviews; all conformed defects must be ruled. |
signed | Human sign-off recorded (owner, role, accountability, signature). |
cutover | Cleared to replace the legacy system. |
How we engage
Start with one program. Scale on proof.
| Tier | What it is |
|---|---|
| 01 - Parity Proof | Bring one self-contained program; get a parity report proving it behaves identically. Proof on your code before any commitment. |
| 02 - Per-Program Migration | We modernize your platform program by program, each parity-verified, priced to the value of the outcome. |
| 03 - Continuous Change | Once modern, every feature and fix flows through the same parity gates, automatically re-verified, logged, and shipped without re-introducing risk. |
| 04 - Embedded Engineering | Hands-on delivery, remote or on-site, when you want us in the room with your team. |
Open and auditable
The AI build engine behind Turkey Enterprise is the public, MIT-licensed TurkeyCode engine - the same pipeline, pointed at legacy, with deterministic parity proof on top. Inspect it, run it, self-host it. An AI build engine for speed, deterministic parity gates for proof: nothing ships on the model's say-so.