What are the differences between the Canon EF 70-200mm f/2.8L IS lens and the non-IS version?

The main difference between the Canon EF 70-200mm f/2.8L IS lens and the non-IS version is the presence of image stabilization (IS) in the IS version. Image stabilization helps reduce camera shake and allows for sharper images when shooting handheld at slower shutter speeds. The IS version is typically more expensive and heavier than the non-IS version.