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Original insights and deep dives into COBOL modernization, mainframe engineering, and AI-driven development.

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Why 95% of ATM Transactions in the US Still Run on COBOL
Industry

Why 95% of ATM Transactions in the US Still Run on COBOL

Mar 25, 2026·8 min read
IBM vs Claude Code: COBOL Modernization
Industry

IBM vs Claude Code: COBOL Modernization

Mar 25, 2026·8 min read
How to Prioritize Which COBOL Components to Modernize First
Modernization

How to Prioritize Which COBOL Components to Modernize First

Mar 10, 2026·8 min read
Hidden risks of COBOL migration: Implicit dependencies and shared state
COBOL

Hidden risks of COBOL migration: Implicit dependencies and shared state

Mar 10, 2026·8 min read
What AI Can (and Can't) Do in a COBOL Modernization Project
Industry

What AI Can (and Can't) Do in a COBOL Modernization Project

Mar 10, 2026·8 min read
How to Build a Strangler Fig Pattern Around a COBOL Batch Job
COBOL

How to Build a Strangler Fig Pattern Around a COBOL Batch Job

Feb 21, 2026·8 min read
How to Write Unit Tests for COBOL Programs That Have Never Had Any
COBOL

How to Write Unit Tests for COBOL Programs That Have Never Had Any

Feb 12, 2026·15 min read
How to Identify and Isolate Shared State Before Touching a COBOL Module
COBOL

How to Identify and Isolate Shared State Before Touching a COBOL Module

Feb 7, 2026·15 min read