The Brief History of Kanban
Kanban is a method for work management, originating from the Toyota Production System (TPS). In the late 1940’s, Toyota introduced “just in time” manufacturing to their production. The approach represents a pull system. This means that production is based on customer demand, rather than the standard push practice to produce amounts of goods and pushing them to the market.
Their unique production system laid the foundation of Lean manufacturing or simply Lean. Its core purpose is minimizing waste activities without sacrificing productivity. The main goal is to create more value for the customer without generating more costs.
What does Kanban mean?
From Japanese, Kanban is literally translated as sign board or visual signal. The simplest Kanban board has three columns – “Requested”, “In Progress” and “Done”. If it is constructed and functioning properly, it would serve as an information radiator, as it shows where the bottlenecks are in the process and what keeps the workflow from going smooth.
In the beginning of 21st century the software industry realized that Kanban can make a real change in the way they produce and deliver products and services. It appeared that Kanban is appropriate not only for the automotive industry, but for any other. This is how the Kanban method was born.
But how does Kanban work?
Let’s discover more.
The 4 Core Principles of Kanban
David J. Anderson (a recognized thought leader on the adoption of Lean/ Kanban for knowledge work) has formulated the Kanban method as an approach to incremental, evolutionary process and systems change for knowledge work organizations. It is focused on getting things done and the most important principles can be broken down into four basic principles and six practices.
Principle 1: Start With What You Do Now
Kanban doesn’t require certain setup and can be overlaid over an existing workflow or process to bring issues to light. This makes Kanban easy to implement in any type of organization as there is no need for you to make sweeping changes right from the start.
Principle 2: Agree to Pursue Incremental, Evolutionary Change
The Kanban method is designed to meet minimal resistance and thus encourages continuous small incremental and evolutionary changes to the current process. In general, sweeping changes are discouraged because they usually encounter resistance due to fear or uncertainty.
Principle 3: Respect the Current Process, Roles & Responsibilities
Kanban recognizes that existing process, roles, responsibilities, and titles may have value and are worth preserving. The Kanban method doesn’t prohibit change, but it does not prescribe it either. It encourages incremental change as it doesn’t create the level of fear that impedes progress.
Principle 4: Encourage Acts of Leadership at All Levels
This is the newest Kanban principle. It reminds you that some of the best leadership comes from everyday acts of people on the front line of their teams. It is important that everyone fosters a mindset of continuous improvement (Kaizen) in order to reach optimal performance on a team/department/company level. This can’t be a management level activity.
The 6 Practices of Kanban
Although embracing the Kanban philosophy and embarking on the transitional journey is the most important step, every organization needs to be careful with the practical steps. There are six core practices as identified by David Anderson that need to be present for successful implementation.
Visualize the Workflow
Make Process Policies Explicit
Improve Collaboratively (using models & the scientific method)
The first and most important thing for you is to understand what it takes to get an item from request to a deliverable product. Only after understanding how the flow of work currently functions can you aspire to improve it by making the necessary adjustments.
To visualize your process with a Kanban system, you will need a board with cards and columns. Each column on the board represents a step in your workflow. Each Kanban card represents a work item.
When you start working on item X, you pull it from “To Do” column and when it is completed, you move it to “Done”. This way you can easily track progress and spot bottlenecks.
Focus switching may seriously harm your process and multitasking could result in waste generation. This is why the second Kanban practice is focused on setting limits of the work in progress (WIP). If there are no work-in-progress limits, you are not doing Kanban.
Limiting WIP means that a pull system is implemented on parts or all of the workflow. Setting maximum items per stage ensures that a card is only “pulled” into the next step when there is available capacity. Such constraints will quickly illuminate problem areas in your flow so you can identify and resolve them.
The whole idea of implementing a Kanban system is to create a smooth healthy flow. By flow, we mean the movement of work items through the production process. We are interested in the speed and the smoothness of movement.
Ideally, we want fast smooth flow. This would mean that our system is creating value quickly. This was it is minimizing risk and avoiding the cost of delay but is also doing so in a predictable fashion.
You can’t improve something you don’t understand. This is why the process should be clearly defined, published and socialized. People would not associate and participate in something they do not believe would be useful.
When everyone is familiar with the common goal, they would be able to work and make decisions regarding a change that will move you in a positive direction.
In order for the positive change to happen, succeed and continue, one more thing needs to be done. The Lean philosophy supports the assumption that regular meetings are necessary for knowledge transfer (feedback loops).
Such are the daily stand up meetings for team synchronization. They are held in front of the Kanban board and every member tells the others what he or she did the previous day and what will be doing today.
There are also the service delivery review, the operations review, and the risk review meeting. The frequency depends on many factors, but the idea is that they are regular, at a strictly fixed hour, straight to the point and never unnecessarily long.
The ideal average length of a stand up should be between 10-15 minutes, and others may reach up to an hour depending on the team size and topics.
The way to achieve continuous improvement and sustainable change within an organization is through shared vision of a better future and collective understanding of the issues that need to be overcome.
Teams that have a shared understanding of theories about work, workflow, process, and risk are more likely to build a shared comprehension of a problem and suggest steps towards improvement, which can be agreed by consensus.
With the development of technology, Kanban has been also continuously improving. Digital Kanban board solutions have been developed to overcome the problems arising in remote teams.
Most of the enterprise sized companies and even more startups have many remote employees. Teams are often distributed all over the world.
They are not able to work on a single physical whiteboard and thus need a digital one, they could access from anywhere. Kanban boards in the cloud are the most effective way to get everyone on the same track as they provide access to all of the information from any device at any time and show actions live.
Moreover, Kanban software allows for a sophisticated analytical process to help you track performance in details, discover bottlenecks and implement the necessary changes.
Digital Kanban boards are also easy to integrate with other systems and can give an extremely valuable perspective of the whole process, save time and increase efficiency.
Kanban in a Nutshell
A Kanban system is more than sticky notes on the wall. The easiest way to understand Kanban is to embrace its philosophy and then apply it to your daily work. If you read, understand and resonate with the four core principles, the practical transition would seem logical and even inevitable.
Visualizing workflow, setting WIP limits, managing flow, ensuring explicit policies and collaborative improvement will take your process far beyond you could think. Remember to organize regular feedback loops and all these pieces together will reveal the true power of Kanban.
As you are now embarking on a journey to understanding Kanban, this is only the beginning. To get a deeper understanding of Kanban, explore the strengths of Kanban Boards, WIP limits, and the Kanban Cards.