An animatic is a string of storyboard images edited together with sound to illustrate how a sequence will flow in motion. It’s a next-level technique after storyboarding. They aren't always necessary, but they do provide a fuller sense of what the finished project will look like.
An animatic is basically an animated storyboard. The same images you’ve already created as a storyboard are now put into a video and can include dialogue, sound effects, and music.
Obviously, it requires a storyboard to be completed beforehand but there is a clear difference between a storyboard and animatic. We’ll cover those differences in the next section.