Legacy Evolution
Tweezr Wins Best of Show at FinovateFall 2026
Our third Finovate Best of Show, and the first in New York. Seven minutes on stage, one live demo on a real legacy core, and a room full of bankers who voted for it.
Insights
Notes from inside the legacy core.
Perspectives on legacy system evolution, blast radius detection, architecture intelligence, and the future of safe code change.
Deterministic System Intelligence
The Expert Who Never Retires: Tweezr on the IBM Z and LinuxONE Ecosystem Podcast
Ohad Kotler joins IBM's z/Action! series to talk about agentic root-cause analysis, tested fixes, and why AI transformed software everywhere except the banking core
Legacy Evolution
Discovery Is the Migration
The industry treats discovery as Phase 1. That is the mistake that kills 70% of modernization programs. Discovery is not the prelude to the work. It is the work.
AI Risk & Code Quality
Hallucinations Under Coercion
AI doesn't hallucinate worst when it doesn't know. It hallucinates worst when a user pushes it past what it knows, and senior validators are the ones who push hardest
Market Intelligence
Two Different Sales: Why Mainframe and Temenos Modernization Need Different Stories
If you're selling 'AI for legacy modernization' the same way to a bank running a 30-year COBOL core and one running a packaged platform, you're losing both deals
Legacy Evolution
The Retirement Cliff: When Your COBOL Lead Walks Out, Your Risk Doesn't
In every bank we walk into, there is one engineer who knows where the bodies are buried. When they retire, the bank inherits a system nobody can change safely. The answer is not to replace the person. It is to capture what they know, before the cliff.
AI Governance for Regulated Change
Citations or It Didn't Happen
In a regulated bank, an AI answer without sources is wishful thinking. The single property that turns AI output from a chatbot guess into an auditable artifact is verifiable grounding, every claim, one click back to the line of code it came from.
AI Governance for Regulated Change
The Artifact Your Regulator Will Sign Off
Sign-off is not about the AI. It's about what you can put in front of the head of compliance, and what they can put in front of the regulator