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
IBM vs Claude Code: COBOL Modernization
How to Prioritize Which COBOL Components to Modernize First
Hidden risks of COBOL migration: Implicit dependencies and shared state
What AI Can (and Can't) Do in a COBOL Modernization Project
How to Build a Strangler Fig Pattern Around a COBOL Batch Job
Originals
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Why 95% of ATM Transactions in the US Still Run on COBOL
IBM vs Claude Code: COBOL Modernization
How to Prioritize Which COBOL Components to Modernize First
Hidden risks of COBOL migration: Implicit dependencies and shared state
What AI Can (and Can't) Do in a COBOL Modernization Project
How to Build a Strangler Fig Pattern Around a COBOL Batch Job
How to Write Unit Tests for COBOL Programs That Have Never Had Any
How to Identify and Isolate Shared State Before Touching a COBOL Module
Industry News
View AllHow Frankenmuth Insurance shed its mainframe and built for the future
For most insurance carriers, the word "transformation" conjures images of new software platforms and cloud migrations. At Frankenmuth Insurance, it meant something more disciplined: a decade-long ...
OpenLegacy integrates into AWS Transform for Modernization to keep mainframe workloads connected as they move to the cloud, one workload at a time
AWS and OpenLegacy today announced OpenLegacy's integration with AWS Transform for Modernization, AWS's service for modernizing legacy systems. The integration helps enterprises keep modernized cloud ...
From “try restarting it” to real-time intelligence: Conversational AI for IT operations and mainframe modernization
Conversational AI is enabling faster troubleshooting and smarter modernization across complex mainframe environments.
Security, skills, and AI: Why mainframe security is putting IT leaders under more pressure than ever
As data moves across hybrid environments and AI reshapes operations, IT leaders must rethink how security, governance, and infrastructure work together to manage rising complexity and risk.
The translation trap: Why AI won’t solve the COBOL crisis
Although many banks are still running decades-old platforms, Claudio González argues that this is where AI can make a bigger difference than most realise, by using it to finally decode these legacy sy ...