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Kanban is a Japanese word that literally means “visual card”. Kanban cards were originally used in Toyota to limit the amount of inventory tied up in “work in progress” on a manufacturing floor. Kanban not only reduces excess inventory waste, but also the time spent in producing it. In addition, all of the resources and time freed by the implementation of a Kanban system can be used for future expansions or new opportunities. The original author of Kanban was Taiichi Ohno.
Kanban term came into existence using the flavors of “visual card,” “signboard,” or “billboard”, “signaling system” to indicate a workflow that limits Work In Progress (WIP). Kanban has been used in Lean Production for over `half-century.
The core concept of Kanban includes −
This concept of Kanban is a direct implementation of a Lean Pull Scheduling System. An item can move to the next segment / state only when it obtains a slot in there.
The implementation of Kanban, as well as other Lean Manufacturing Methods, such as Kaizen, can have significant benefits for almost any type of work. Kanban is more effective because it visually indicates when the production should start and stop. It is faster, more efficient, and saves significant money over most other production models. It is also far more directly responsive to customer demand.
Kanban has the following commonly observed benefits −
In agile, if values are combined with Kanban characteristics, the outcome would be Agile Kanban. This practice is gaining popularity in Software Development wherein the Agile iteration approach and Kanban value stream focus are combined.
In this chapter, we will learn the characteristics of Kanban.
Kanban provides improvements in the workflow. With visual representation of the workflow, speed of moving from one task to another is reduced. This is accomplished through the creation of clearly marked flow lanes, Kanban cards and clearly marked columns to indicate where each item is in the workflow. If a task needs longer duration, it is allowed to execute without hindrance, and at the same time, the tasks that are completed will flow to the next state.
This allows −
Hence, planning is flexible and not time-boxed.
Explicit limits are assigned to number of items that can be in progress at each workflow state, indicated by a column.
When you have two teams and the first one is performing better than the second one, it is likely that it pushes more work than the other can actually handle. This often creates friction between the teams. A solution to this is the Pull approach.
In Pull Approach, the next team pulls work only when it is ready for it. Pull Approach is implemented by adding a buffer with limited capacity between the two teams.
The benefits of Pull Approach are −
The cycle time for each task is measured and the process is optimized to reduce the cycle times.
Benefits of continuous delivery are −
Visually organized workflows (on Kanban Boards) facilitate −
Each day, for each column, mark how many tasks are in it, you will see a mountain-like chart. This chart shows the past performance and allows predicting future results.
You can gather the following information from the chart −
By focusing on what a customer wants, the scope becomes clear. The focus is on delivering value to the customer.
Efficiency can be achieved in the following ways −
Kanban is adapted to software development as a project management approach. Kanban in software development supports a continuous workflow, termed as Value Stream.
The Value Stream consists of all actions required to bring a project from creation to completion.
The actions can −
Anything that does not add any value to the project is known as Waste. Kanban facilitates elimination of waste.
In software development, there are three types of waste −
Waste in code development is due to the following reasons −
Waste in project management is due to the following reasons −
Waste in team potential is due to the following reasons −
Agile Kanban is Agile Software Development with Kanban approach. In Agile Kanban, the Kanban board is used to visualize the workflow. The Kanban board is normally put up on a wall in the project room. The status and progress of the story development tasks is tracked visually on the Kanban board with flowing Kanban cards.
Kanban board is used to depict the flow of tasks across the value stream. The Kanban board −
The major advantages of using a Kanban board are −
The tasks and stories are represented by Kanban cards. The current status of each task is known by displaying the cards in separate columns on the board. The columns are labeled as To Do, Doing, and Done. Each task moves from To Do to Doing and then to Done.
Kanban Board is updated on a daily basis as the team progresses through the development.
The label in the Doing column also contains a number, which represents the maximum number of tasks that can be in that column at any point of time. i.e., the number associated with the Doing column is the WIP (Work-In-Progress) Limit.
Pull approach is used as and when a task is completed in the Doing column. Another card is pulled from the To Do column.
In Agile Development, the team is responsible for planning, tracking, reporting and communicating in the project. Team is allowed to make decisions and is accountable for the completion of the development and product quality. This is aligned to the characteristic of empowerment of the team in Kanban.
In Agile development, there is no gate approach and the work flows across the different functions without wait-time. This contributes in minimizing the cycle time characteristic of Kanban.
In Agile Kanban, the metrics are tracked visually using −
Kanban Board is used to −
Burndown chart is used to capture −
As Kanban Board is updated daily, it contains all the information that is required by the Burndown charts.
In Agile Kanban, the user stories are broken into tasks and Kanban cards are used to track the tasks on the Kanban board. Agile Kanban has a concept of iteration that is not present in Kanban. Further, no processes are considered.
Kanban is defined to be executed in value stream with focus on delivery of value. Kanban in software development can be visualized as the features flowing across the value stream. All the Kanban characteristics (Refer Chapter – Characteristics of Kanban in this Tutorial) are met in the Kanban approach for software development.
Feature Kanban Board is used to track the Feature Driven Development with Kanban Approach. Each Feature is assigned to a particular release. The columns in the Kanban board represent releases. Hence, each column contains all the features assigned to the release represented by it.
Each feature is broken into stories. Each release is broken into iterations. The iteration is executed in an Agile Development approach. This can be treated as a sub-stream in the value stream, with the stories to be completed within that iteration assigned to it.
Agile Kanban approach is followed within each sub-stream that is implemented as an iteration. Each story is broken into tasks in the iteration. Task Kanban board is used to track the status and progress of the story development tasks. The current status of each task is known by displaying the cards in separate columns on the board. The columns are labeled as To Do, Doing, and Done. Each task moves from To Do to Doing and then to Done.
Continuous delivery to the customer is ensured with features tracked on feature Kanban board and stories representing features tracked on task Kanban board.
Delivery through a release is accomplished by −
Agile development as well as Kanban maintain team collaboration. This, in turn helps in identifying and resolving Bottlenecks immediately as required by Kanban. This results in accomplishment of all the needed tasks within the iteration to deliver quality product, which meets customer expectations.
Kanban supports process improvements to enhance the delivery approach continuously.
Consider a requirement that is a change or addition to the product. In such a case, Kanban cards can be used to visualize the requirement passing through the processes of analysis, design, development, product integration and testing. This is different from the Waterfall approach in the sense that it does not require completion of one process for all the requirements to flow to the next process in the sequence.
Such an implementation of Kanban in product maintenance allows maintainability, reliability and integrity of the product. The required process improvements are gathered at regular intervals and implemented on a continuous basis.
In this chapter, we will learn the similarities and differences between Kanban and Scrum. These similarities and differences will help you in choosing the correct method for your project.
Similarities between Kanban and Scrum are −
The differences between Kanban and Scrum are as follows −
Scope of the sprint is fixed. WIP is limited per unit of time (WIP limit is the velocity).
The following advantages can help you choose between Kanban and Scrum −
Thus, Kanban and Scrum are effective tools in their specific contexts. You can combine Kanban and Scrum to derive maximum benefits from both.
You can use Kanban and Scrum together by implementing those characteristics that will suit your needs. The constraints of both need to be considered before adapting them. For instance, Scrum requires Time-boxed Sprints and if you do away with those, you cannot say that you have implemented Scrum. Both give you a basic set of constraints to drive your own process improvement.
Several project management tools that follow Kanban approach are available. In this chapter, you can have an overview of the following Kanban Tools −
You can get more information on these tools at the respective sites. A comparison of these tools and some more can be found at https://www.getapp.com/project-management-planning-software/.
Kanban tool is a visual project management tool. Use Kanban cards, colors, swim-lanes, tags and due dates to compose work on Kanban board. Analyze and constantly improve your process to increase business efficiency.
Following are the important features of the Kanban tool −
For more information, visit the site http://kanbantool.com/
Kanbanery is a visual project management tool that helps you work more effectively, alone and together, by visualizing work.
Features of Kanbanery include −
For more information, visit the site, https://kanbanery.com/
LeanKit supports Kanban-based visual management. It can be used in distributed environment with access to the CEO of a company, to all employees, customers, and partners.
Features of LeanKit include −
For more information, visit the site http://leankit.com/
JIRA Software is an Agile project management tool designed for teams of every shape and size.
Features of JIRA software include −
For more information, visit the site https://www.atlassian.com/software/jira
Earliz is an online project management and monitoring software that supports smart project management and collaboration.
Features of Earliz include −
Targetprocess is a software tool to visualize and manage Agile projects with full and natural support for Scrum, Kanban or a customized Agile method. With enhanced visualization functionality, Targetprocess gives the visibility you need across the teams, projects, and the entire organization.
Features of Targetprocess include −
For more information, visit the site http://agile-project-management-tool.targetprocess.com/
Projectplace is a no-installation project management tool that provides comprehensive solution allowing teams and organizations to plan, visualize, and keep track of their projects in real time.
Features of Projectplace include −
For more information, visit the site https://www.projectplace.com/
Wrike combines project management with a real-time workspace for collaboration, discussion and document sharing.
Features of Wrike include −
For more information, visit the site https://www.wrike.com/
smartQ is an agile project management tool built around a visual task board (Kanban Board). It allows you to easily distribute work, track its progress and collaborate with the team online. smartQ can track tasks, issues, tickets, i.e. it is customizable to fit any workflow.
For more information, visit the site http://www.getsmartq.com/
Accelo Projects is a Cloud Project Management Software that facilitates planning and tracking, automation and change management.
Features of Accelo Projects include −
For more information, visit the site https://www.accelo.com/products/projects/
Trello is a project management software that utilizes the concept of boards to represent projects and within boards, cards to represent tasks. Trello supports Team Collaboration enabling members to discuss a project in real-time. It keeps everybody informed through task assignments, activity log, and e-mail notifications.
Features of Trello include −
For more information, visit the page https://trello.com/
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