Reengineering how a firm performs a business process

$q,$ requires that a company have many strategic partnerships and alliances with outsiders, make aggressive use of Six Sigma and best practice programs, and strive for maximum value chain efficiency. $q,$ is the centerpiece of total quality management $($TQM$)$ programs aimed at improving the quality with which every value chain activity is performed and achieving a Six Sigma or better defect rate for each $$ctivity$.q,$ is the centerpiece of Six Sigma programs to perform particular value chain activities with the utmost accuracy. $q,$ is a tool for pulling the organizationally scattered pieces of an activity out of different departments and creating a single work group $($often called a process department$)$ to take charge of the whole activity $($or business process$),$ reengineer and streamline the workflow and various work steps, and thereby perform it in a better, cheaper, and more strategy$-$supportive fashion.

is usually a company's most important "best practice" for achieving lower operating costs.