Value stream analysis
- Value stream analysis is described in :
- Value stream mapping
- Waste and WIDETOM
- Business value delivered chart
Value stream mapping
- The value stream map is a Lean tool that practitioners use to analyse the value stream.
- Value stream mapping is a lean manufacturing analysis technique adopted by agile.
- A value stream map may be used to analyze the flow of information or materials from origin to destination to identify areas of waste.
- The identified areas of waste are opportunities for process improvement.
- A value stream map is typically mapped or charted collaboratively with a team so it may define and view the entire process together, pinpointing areas of waste within the process.
- Processes that add value (processing of a part or feature) are generally referred to as « value-added » and processes that do not (e.g., waiting for a part to arrive) are generally referred to as « non value-added. ».
- Generally speaking, one wants to reduce, to the largest extent possible, the non value-added time (i.e., areas of waste).
- [Lean-Agile Software Development: Achieving Enterprise Agility. Alan Shalloway, Guy Beaver, James R. Trott.]
Value Stream Mapping practice
- This technique illustrates the flow of information (or materials) required to complete a process
- It uses following reflections :
- Identify the product or service that you are analyzing
- Create a value stream map of the current process, identifying steps, queues, delays & information flows
- Review the map to find delays, waste, and constraints
- Create a new value stream map of desired future state of the process, optimized on delays, waste and constraints
- Develop a roadmap for creating the optimized state
- Plan to revisit the process in the future to continually tune and optimize
- Waste can take many forms and can be remembered using the pneumonic device WIDETOM :
- W – waiting;
- I – inventory;
- D – defects;
- E – extra processing;
- T – transportation;
- O – overproduction;
- M – motion.
Value stream analysis Steps
- 1.Identify product / service to improve
- 2.Create as-is value stream map
- Create a value stream map of the current process, identifying steps, queues, delays, and information flows.
- 3.Identify delays, waste, and constraints
- 4.Create to-be value stream map
- 5.Develop roadmap to optimized state
- 6.Revisit the process in the future
Business value delivered chart
- The entire enterprise (business, management, and development teams) needs the line of sight to velocity (points/time) dashboard-type view of work management which in other terms is a business value delivered chart.