"It had become a behemoth to maintain. The business logic wasn't one coherent program, it was whole piles of scripts daisy-chained together, triggered by cron tasks"
the reality is that is just how most things work, especially rest based services.
lookup "microservice architecture " for an understating of the importance of these things, also unix is based off that philosophy.
It's not new, when I studied computing at uni we where taught to reuse code snippets from the library repository. Its standard for programs to call other programs or routines, its the whole reason why API's where such a hit as that is literally programs calling other programs too do work.
Biting the hand that feeds IT
