The legacy language skills gap is a major issue for mainframe maintenance

Most commonly used languages among developers in 2021

JavaScript

68%

HTML/CSS

56%

SQL

50%

Python

42%

TypeScript

36%

36%

Node.js

35%

Java

30%

C#

28%

Bash/Shell

0.5%

COBOL

0.5%

PL/I

JavaScript

68%

HTML/CSS

56%

SQL

50%

Python

42%

TypeScript

36%

36%

Node.js

35%

Java

30%

C#

28%

Bash/Shell

0.5%

COBOL

0.5%

PL/I

JavaScript

68%

HTML/CSS

56%

SQL

50%

Python

42%

TypeScript

36%

36%

Node.js

35%

Java

30%

C#

28%

Bash/Shell

0.5%

COBOL

0.5%

PL/I

JavaScript

68%

HTML/CSS

56%

SQL

50%

Python

42%

TypeScript

36%

36%

Node.js

35%

Java

30%

C#

28%

Bash/Shell

0.5%

COBOL

0.5%

PL/I

LzLabs, 2022