Kaizen is a Japanese philosophy of continuous incremental improvement involving all employees. It focuses on simplifying processes by breaking them down and improving subprocesses. The Kaizen cycle involves documenting processes, identifying waste, planning improvements, implementing changes, verifying results, and making successful changes the new standard. Kaizen blitzes aim to radically improve a defined process in a short time through themes like reducing clutter, improving visual controls and communication, and streamlining activities. Kaizen provides advantages like increasing effectiveness, efficiency, improvement, reduction of waste, and adapting best practices.