We prove the rewrite, so no one has to hope.
LegacyLift exists to make modernising critical systems safe. Not faster at the cost of trust, but faster because the result is proven.
The world runs on code no one dares to touch. We make it safe to modernise.
The systems that run banks, benefits, and infrastructure are decades old, and often nobody fully remembers how they work. Rewriting them is not the hard part. The hard part is knowing the new version still behaves exactly like the old one, before it goes live and someone gets hurt.
So teams either freeze, and stay stuck on ageing technology, or they migrate and hope. LegacyLift removes the hope. We understand the old system, migrate it under human control, and prove the result with independent, signed evidence a regulator can trust.
Trust is earned, not requested.
We do not ask you to trust a migration. We replay it against the real system, compare every result, and sign the evidence. If it behaves, we can prove it.
When we cannot be sure, we say so.
A run is a real result or an honest 'insufficient evidence.' We never fabricate a score to look good in a demo, because a validator that certifies a broken migration is worse than none at all.
We are the referee, not the player.
Our value is validation, not translation. We keep the proof independent of the thing it judges, which is the only way a passing score means anything to a risk team.
The machine reads. People decide.
The AI does the reading and the proving. People make the calls. Every change is approved by someone accountable, and nothing ships on trust alone.
Modernise with proof.
If you are staring down a legacy migration you cannot afford to get wrong, we would like to talk.