Image stabilization reduces blur caused by camera movement. It can live in the camera body, in the lens, or in software. Those systems are not identical.
IBIS
IBIS stands for in-body image stabilization. The camera moves the image sensor to compensate for small movements.
Lens stabilization
Some lenses move optical elements to compensate for camera shake. Canon often calls this IS, Sony uses OSS on many lenses, and Nikon commonly uses VR.
Digital stabilization
Digital stabilization is common in video. The camera crops into the image and shifts the recorded frame electronically to counter movement. This often reduces the field of view.
Can stabilization freeze a moving subject?
No. Stabilization corrects camera movement. If a person, animal, car, or ball moves during the exposure, you may still need a faster shutter speed.
Can IBIS and lens stabilization work together?
On some camera and lens combinations, yes. The exact behavior is system-specific, so this is a compatibility question worth checking for the actual body and lens.
Why stabilization matters for buying decisions
A camera without IBIS may be completely fine when used with stabilized lenses, a tripod, fast shutter speeds, or mostly static video. A camera with IBIS may be more forgiving with unstabilized lenses. The right answer depends on how you shoot.