Hasta La Motion!

I’m looking into the role of a Previs artist and Layout TD. Do these artists have the same role?

In some job summaries, a Previs artist works with the Director and VFX Sup by providing previs in 3D which shows the early shot sequences of a film.

Is the Layout TD merely responsible for creating pipeline 3D elements to be used as set extensions, relighting for compositors and CG integration for the 3D Department?

If this is not the Previs artist’s job, then does the Layout TD do the previs as well as provide pipeline scene files?

Thanks