This describes how most people have it deployed, yes.

It gets real fun when you have custom Java plugins, Groovy script, BASH script, Windows runners, and Linux runners, all in play at the same time. Much of which is held together with hopes, dreams, and unicorn farts, willed into existence by wizards that haven't worked there in over seven years. If upper management could even comprehend the level of deferred maintenance and haphazard software hackery that birthed this electronic Gordian knot, this unholy union of decrepit software and company policy, they wouldn't sleep. Ever.