Jack Welch transformed GE during his 20-year tenure through three waves of restructuring:
1) Introduced the three circle vision and decentralized GE into business units.
2) Focused on work-out processes, best practices, going global, and developing leaders. Productivity and international sales grew significantly.
3) Emphasized boundaryless behavior, service businesses, and six sigma quality. Revenues increased 376.7% and earnings 670.88% under Welch's leadership through acquisitions, divestitures, and setting ambitious stretch targets.