Isn't that what JCL did? https://en.wikipedia.org/wiki/Job_Control_Language https://en.wikipedia.org/wiki/Job_Control_Language True, they didn't call it "Infr

Isn't that what JCL did? https://en.wikipedia.org/wiki/Job_Control_Language https://en.wikipedia.org/wiki/Job_Control_Language True, they didn't call it "Infrastructure as Code" but it was used to define mainframe resources for jobs to use when they ran?