In Lean, there are typically five levels of maturity or progression an organization can go through: Level 1: Initial Awareness: The organization becomes aware of Lean principles and concepts but has not yet implemented them. Level 2: Limited Implementation: Lean practices are introduced in isolated areas or departments. Level 3: Broad Implementation: Lean is applied more comprehensively across various processes and functions within the organization. Level 4: Lean Excellence: The organization achieves a high level of proficiency in Lean, with continuous improvement ingrained in its culture. Level 5: Enterprise-Wide Lean: Lean principles are fully integrated into the organization's DNA, spanning across all functions and levels, and driving overall business strategy. These levels represent a progression toward greater Lean maturity and effectiveness in achieving process improvement and waste reduction.