Lean project management is a project management approach that applies the principles of lean management to the project management process. It focuses on reducing waste, increasing efficiency, and improving customer value through a set of lean tools and techniques.

In lean project management, the emphasis is on delivering the project outcome with maximum efficiency and minimal waste. This involves identifying and eliminating waste throughout the project lifecycle, including unnecessary activities, defects, and delays. It also involves streamlining the process by minimizing hand-offs and reducing cycle time.

Some of the key practices of lean project management include:

1. Value stream mapping: Mapping out the flow of work in the project and identifying areas where waste can be eliminated or reduced.
   
   
2. Kanban: A visual management tool that helps teams manage their work by visualizing the workflow and identifying bottlenecks and delays.
   
   
3. Continuous improvement: A process of ongoing improvement that involves regularly reviewing and refining the project process.
   
   
4. Pull scheduling: A scheduling approach that involves scheduling work only when it is needed, rather than scheduling everything at the beginning of the project.
   
   
5. Kaizen events: Focused improvement activities that bring together cross-functional teams to identify and address specific areas of waste or inefficiency in the project process.
   

By applying the principles of lean management to the project management process, lean project management can help organizations complete projects more efficiently, with less waste and better customer value. It can also help organizations become more agile and better able to respond to changing project requirements.