Many models are available for continuous improvement.
A management systems standard (MSS) provides an internationally agreed-upon model for organizations to follow to ensure the proper handling of day-to-day operations. An MSS provides the structure for operations, such as how the organization buys materials, maintains accounting records, trains its employees, processes payroll, implements pollution prevention or decreases insurance rates.
A common MSS operating principle is the plan-do-check-act (PDCA) model.