  We present a direct comparison studying equilibration through kinetic theory
at weak coupling and through holography at strong coupling in the same set-up.
The set-up starts with a homogeneous thermal state, which then smoothly
transitions through an out-of-equilibrium phase to an expanding system
undergoing boost-invariant flow. This first apples-to-apples comparison of
equilibration provides a benchmark for similar equilibration processes in
heavy-ion collisions, where the equilibration mechanism is still under debate.
We find that results at weak and strong coupling can be smoothly connected by
simple, empirical power-laws for the viscosity, equilibration time and entropy
production of the system.
