Six Sigma is a business management strategy, originally developed by Motorola in 1985.
Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes of defects (errors) and minimizing variability in manufacturing and business processes
It is positioned to be arbitrary objective. When reading this wikipedia information getting some doubts about objectivity.
A lot of the technical tools mentioned are about the BI and analytics.
Activity Based Management
Activity-based costing (ABC) is a costing methodology that identifies activities in an organization and assigns the cost of each activity with resources to all products and services according to the actual consumption by each. This model assigns more indirect costs (overhead) into direct costs compared to conventional costing.
Consortium of Advanced Management International
cam-i wiki is "the system by which companies are directed and controlled" (Cadbury Committee, 1992). It involves a set of relationships between a company’s management, its board, its shareholders and other stakeholders;
it deals with prevention or mitigation of the conflict of interests of stakeholders. Ways of mitigating or preventing these conflicts of interests include the processes, customs, policies, laws, and institutions which have impact on the way a company is controlled. An important theme of corporate governance is the nature and extent of accountability of people in the business, and mechanisms that try to decrease the principal–agent problem