The document discusses several process improvement frameworks and methodologies:
- CMMI provides maturity levels to guide process improvement for product development, services, and acquisition. It originated for software but has been generalized.
- Lean focuses on eliminating waste in manufacturing and production. Principles include reducing overburden and uneven workloads.
- Lean Engineering aims to increase engineering efficiency by reducing waste, while Lean Manufacturing focuses more on inventory control and production processes.
- ITIL provides best practices for IT service management and underpins the ISO 20000 standard, though there are some differences between the frameworks. ITIL was influenced by Deming's process model view of operations management.