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Writing on legacy modernization

Engineering deep-dives and strategic analysis on legacy modernization. New post every week.

Latest posts × Technical deep-dives + Strategy + Financial services +
Technical deep-dives

COBOL to Java migration cost: what actually drives the number

Aug 31  •  14 min read

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Strategy

Most of Your Legacy Estate Should Be Left Alone

A modernization firm's framework for deciding what not to modernize: change-rate triage, nine dispositions, a weighted scoring model and a worked example.

Aug 1  •  14 min read
Strategy

Why Most Strangler Fig Migrations Stall at 40%

Strangler fig migrations routinely plateau at 30-50% and never finish. Here is why the stall happens and how to design an exit condition before sprint one.

Jul 31  •  14 min read
Strategy

Security Debt Is the Modernization Deadline You Don't Control

Legacy systems are structurally unpatchable, not just unpatched. How to use security and regulatory deadlines to turn modernization into a dated commitment.

Jul 30  •  15 min read
Technical deep-dives

AI in software modernization: how Gen AI and symbolic AI actually rebuild legacy systems

How Gen AI and symbolic AI modernize legacy code, where each breaks, and why deterministic transformation plus Gen AI is the correct path at scale.

Jul 29  •  10 min read
Strategy

Why GenAI Alone Is Not Enough for Modernization

Understanding a legacy system and transforming a legacy system are not the same problem — the future of modernization is both working together.

Jul 27  •  7 min read
Technical deep-dives

How Deterministic Software Transformation Works

Symbolic AI, Program Analysis, and Large-Scale Legacy Modernization

Jun 16  •  10 min read
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