Quote from the Blender 2.80 manual (animation section):
Objects can only use one Action at a time for editing. The NLA Editor is used to blend multiple actions together.
@waylow it’s my understanding that the NLA Editor works like the animation layers in Maya (at least in 2.8 I think), as a way to non destructively build up your animation.
And as I understand this also makes it easier to edit your animations afterwards, since you’re only affecting a layer instead of changing everything, your base animations stay intact.
And, if I understand correctly, it also helps immensely with game animation, where you often have to blend/transition different animations in your game engine, like idle->walk->run->idle (prepares your animation better for this process). As well as helps with looping (game) animations like walk cycles (makes looping easier).
So, I would reallllyyyy like to see a tutorial on this! like yesterday 😉