Hi, @wissal!
As described by umaryaqubs: IVS (Intelligent Video Surveillance) is a name of complete solution including cameras, VCN (Video Cloud Node), VCM (Video Content Management), Storage, etc., while VCM is just a part of IVS.
Generally, IVS is also referred to as the IVS client.
As for VCM, Huawei's Video Content Management (VCM) system leverages the Cloud-based intelligent Big Data analysis technology to offer a wide array of intelligent video analysis algorithms and pre-integrate multiple intelligent analysis functions, dramatically improving video usage in industry applications.
The diversified service capabilities of VCM:
Repairs video feeds that are corrupted by disk damage, cyclic overwrite, frame loss, or man-made errors.