The first step to developing a value stream map is to understand the concept of value adding activities there are three criteria for value adding activities customer wants you to do it the material or information is being processed or transformed to final products it is done right the first time any activity that exists outside of these three criteria is considered waste once . Value stream mapping vsm is a visualization tool that facilitates that it comes from the lean methodology and its function is to show the process the way it currently is followed by how it should be the best way to understand it is to learn how to do it step by step. A variation on the six sigma framework marries lean management principles with six sigma methodologies lean management seeks to reduce waste and thereby production cycle time whereas six sigma focuses on reducing variation among deliverables as some see it six sigma focuses on finding and fixing defects after the fact while lean tries to prevent defects from occurring in the first place . Tap to unmute if playback doesnt begin shortly try restarting your device up next cancel autoplay is paused youre signed out videos you watch may be added to the tvs watch history and