A gradual change animation poster is a visual medium that uses motion graphics to depict a series of changes over time. It is often used in advertising, entertainment, and information dissemination to illustrate processes, transformations, or the passage of time. The technique involves creating a sequence of images that subtly change, creating a smooth transition effect when played in rapid succession. This form of animation can be created using various software tools such as Adobe After Effects, Blender, or even simpler platforms like PowerPoint.