Image stabilization (IS) started a number of years ago with Konica-Minolta, now Sony.
IS has developed into two forms. It is either "in body", such as Konica Minolta developed or "in lens" which is primarily used by Canon and Nikon. Both systems have advantages and disadvantages. Some systems can use either one or the other.... even both which you will learn is very ineffective.
This video created by Gordon Laing, the editor over at Camera Labs, demontrates both IS systems in one camera. The effect of either of these IS systems is dramatic and you will actually get to see how it works. The camera used here is one that I own and is now about 6 years old. But the demonstration is still a great one.