COBOL Is the Asbestos of Programming Languages
#COBOL #legacy code #programming languages #software maintenance #technology debt
📌 Key Takeaways
- COBOL is compared to asbestos due to its outdated and hazardous nature in modern programming.
- The language remains entrenched in legacy systems, particularly in finance and government sectors.
- Maintaining COBOL systems is costly and risky, with a shortage of skilled developers.
- Transitioning away from COBOL is challenging but necessary for security and efficiency.
📖 Full Retelling
🏷️ Themes
Legacy Systems, Programming Challenges
📚 Related People & Topics
Programming language
Language for controlling a computer
A programming language is an engineered language for expressing computer programs. Programming languages typically allow software to be written in a human readable manner. Execution of a program requires an implementation.
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Deep Analysis
Why It Matters
This news matters because COBOL remains critical infrastructure for global financial systems, government operations, and large corporations despite being a 65-year-old language. It affects banking customers, taxpayers, and anyone using government services as COBOL system failures can disrupt transactions, benefit payments, and essential services. The comparison to asbestos highlights how a once-innovative technology has become a hidden liability that's difficult and expensive to remove, creating systemic risk for organizations that depend on legacy systems.
Context & Background
- COBOL (Common Business-Oriented Language) was created in 1959 and became dominant for business applications in the 1960s-1980s
- An estimated 220 billion lines of COBOL code remain in production today, processing $3 trillion in daily commerce
- Major systems still running on COBOL include Social Security, IRS tax processing, banking ATMs, and airline reservation systems
- The 2020 COVID-19 pandemic exposed COBOL vulnerabilities when unemployment systems struggled with unprecedented claim volumes
- Fewer than 100,000 COBOL programmers remain active globally, with most original developers retired or deceased
What Happens Next
Organizations will continue facing pressure to modernize COBOL systems as maintenance costs rise and skilled programmers become scarcer. Expect increased investment in automated COBOL-to-modern-language conversion tools and hybrid approaches that wrap legacy systems with modern interfaces. Critical deadlines will emerge as more COBOL experts retire, potentially leading to system failures if replacement timelines aren't met. Government initiatives may emerge to fund public sector COBOL modernization, similar to Y2K remediation efforts.
Frequently Asked Questions
Replacement is prohibitively expensive and risky - major banks estimate costs in billions of dollars with years of testing required. The business logic embedded in decades-old COBOL code is often poorly documented, making complete understanding difficult. Migration carries substantial risk of disrupting critical financial transactions and government services that millions depend on daily.
Most universities stopped teaching COBOL decades ago as newer languages emerged, creating a generational gap in skills. Experienced COBOL developers are retiring faster than new ones enter the field, with the average age of remaining experts being over 55. The specialized knowledge required includes not just the language itself but understanding the unique business rules and systems architecture of each organization's legacy implementation.
Like asbestos, COBOL was once considered a revolutionary solution (for data processing rather than construction) that became embedded in critical infrastructure. Both present hidden dangers that emerge over time - asbestos causes health issues when disturbed, while COBOL creates business risks when systems need modification or experts disappear. Removal of both is expensive and risky, often leading organizations to choose containment over replacement despite long-term liabilities.
Yes - proven stability is a major advantage, as these systems have processed transactions reliably for decades. COBOL's design excels at batch processing of large volumes of business data, which remains essential for banking and government operations. The systems represent massive institutional knowledge that would be expensive and time-consuming to recreate in modern architectures, with some calculations showing 5-10 times development cost for replacement.
Complete failure would cripple global financial systems, preventing bank transactions, stock trades, and government benefit payments. Widespread economic disruption would occur as payroll systems, utility billing, and insurance processing would halt. Recovery would be extremely difficult without the specialized knowledge of retired COBOL programmers, potentially requiring complete system rebuilds that could take years.