Most animated explainer videos today have a flat, two- dimensional look. This 2D technique works really well for simplifying ideas or processes. However. sometimes, it's crucial to add a third dimension: depth.
It can be hard to discriminate between 2D animation and 3D animation. If you actually wish to get technical, it's the distinction between drawing 2D illustrations and creating 3D models. But. the typical viewer does not appreciate all of that. They feel in one's bones that 3D appears more sophisticated and aesthetically richer.