COBOL.fyi
The industry standard source for COBOL and mainframes
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Why 95% of ATM Transactions in the US Still Run on COBOL
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IBM vs Claude Code: COBOL Modernization
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How to Prioritize Which COBOL Components to Modernize First
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Hidden risks of COBOL migration: Implicit dependencies and shared state
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What AI Can (and Can't) Do in a COBOL Modernization Project
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How to Build a Strangler Fig Pattern Around a COBOL Batch Job
Originals
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Industry
Why 95% of ATM Transactions in the US Still Run on COBOL
Mar 25, 2026·8 min read
Industry
IBM vs Claude Code: COBOL Modernization
Mar 25, 2026·8 min read
Modernization
How to Prioritize Which COBOL Components to Modernize First
Mar 10, 2026·8 min read
COBOL
Hidden risks of COBOL migration: Implicit dependencies and shared state
Mar 10, 2026·8 min read
Industry
What AI Can (and Can't) Do in a COBOL Modernization Project
Mar 10, 2026·8 min read
COBOL
How to Build a Strangler Fig Pattern Around a COBOL Batch Job
Feb 21, 2026·8 min read
COBOL
How to Write Unit Tests for COBOL Programs That Have Never Had Any
Feb 12, 2026·15 min read
COBOL
How to Identify and Isolate Shared State Before Touching a COBOL Module
Feb 7, 2026·15 min read
Industry News
View AllStocktwits on MSN·Jul 17, 2026
IBM stock headed for worst week in over 58 years — why Citi cut its price target by 32%
According to TheFly, Citi analyst Fatima Boolani cut her price target on IBM to $255 from $375 while maintaining a ‘Buy’ rating.
The Motley Fool on MSN·Jul 17, 2026
IBM: Should Investors Buy the 25% Crash in the Stock or Stay Away?
IBM shares crashed after the company preannounced poor Q2 results.
Forbes·Jul 17, 2026
For Banks, The Legacy Tax On AI Spending Is Extremely Costly
In the banking industry, holding on to legacy operational systems while adopting AI comes with a serious price tag.
Stocktwits on MSN·Jul 15, 2026
IBM stock gains premarket: Analyst says AI narrative isn’t broken, calls mainframe weakness a short-term setback
IBM lost a quarter of its market value on Tuesday after the stock suffered its steepest single-day decline since the company went public nearly 60 years ago.
CIO·Jul 14, 2026
Deluxe Corporation beats the odds with mainframe migration using AI
Many mainframe exit projects are projected to fail, due to an overestimation of gen AI capabilities. But the financial services company used it as the missing piece of the migration puzzle.