Reengineering has some really beneficial things. It tries to internalize and externalize all operations towards the facilitation of the customer and market. It can help in the rapid transformation needed "behind the scenes" or processes and/or systems. Reengineering aims for dramatic improvements in critical measures of performance such as cost, quality, service and speed. It offers something of lasting value because it is the first management concept to emphasize the redesigning of both the organization and jobs in light of environmental and technological changes. Reengineering is important because it looks at job design as the building block to organization design