  With the explosion of data on jet based observables in relativistic heavy-ion
collisions at the Large Hadron Collider and the Relativistic Heavy-Ion
Collider, perturbative QCD based simulations of these processes, often
interacting with an expanding viscous fluid dynamical background, have taken
center stage. This review is meant to bridge the gap between theory, simulation
and phenomenology of jet modification in a dense medium. We will demonstrate
how the existence of such end-to-end event generators with semi-realistic or
even fully realistic final states allows for the most rigorous comparisons
between pQCD based jet modification theory and experiment. State-of-the-art
calculations of several jet based observables are presented. Extensions of this
theory to jets in the small systems of $p$-$A$ and $e$-$A$ collisions is
discussed.
