TLS

TLS refers to three principle improvement methodologies:

TOC: The theory of constraints (TOC) refers to a general philosophy put by Dr. Eliyahu M. Goldratt, and is widely used by a large number of organizations to improve their operations. It contains five major steps: “Identify the constraint, Exploit it, Synchronize, Elevate, and look for the next constraint”
Lean: Make it faster by reducing the existing wastes in operations
Six Sigma: Reduce the existing variations and deviations from the planned targets

The focusing steps in TLS are mainly used in project management, manufacturing, sales, marketing, finance fields, and have proved dramatic changes in operations management