A storyboard is a visual outline for a video that consists of a series of thumbnail images showing what happens in each frame from beginning to end, along with notes. Storyboards can be hand-drawn or created using software, and serve a similar purpose to a script but are visual rather than text-based. Storyboards help organize ideas, plan videos more effectively by coordinating details, and communicate ideas to others through a visual representation. They also simplify later stages of video production by establishing a plan to follow.