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[4] In kanban, problem areas are highlighted by measuring lead time and cycle time of the full process and process steps. [5] One of the main benefits of kanban is to establish an upper limit to work in process (commonly referred as "WIP") inventory to avoid overcapacity. Other systems with similar effect exist, for example CONWIP. [6]
The diagram here shows a software development workflow on a kanban board. [4]Kanban boards, designed for the context in which they are used, vary considerably and may show work item types ("features" and "user stories" here), columns delineating workflow activities, explicit policies, and swimlanes (rows crossing several columns, used for grouping user stories by feature here).
CONWIP is a kind of single-stage kanban system and is also a hybrid push-pull system. While kanban systems maintain tighter control of system WIP through the individual cards at each workstation, CONWIP systems are easier to implement and adjust, since only one set of system cards is used to manage system WIP. [2]
Kanban board for the software development team. A popular example of a kanban board for agile or lean software development consists of: Backlog, Ready, Coding, Testing, Approval and Done columns. It is also a common practice to name columns in a different way, for example: Next, In Development, Done, Customer Acceptance, Live. [5] Kanban for ...
Production Kanban is designed for a replenishment quantity that may be smaller than a lot size or batch. It is based on a "dual card Kanban" system where a "move" card or container represents the quantity required by the downstream point of consumption and a "produce" card is kept on a display board and accumulates to a replenishment batch.
The process capability index, or process capability ratio, is a statistical measure of process capability: the ability of an engineering process to produce an output within specification limits. [1] The concept of process capability only holds meaning for processes that are in a state of statistical control .
Research in the software industry on the cone of uncertainty stated that in the beginning of the project life cycle (i.e. before gathering of requirements) estimates have in general an uncertainty of factor 4 on both the high side and the low side. [3] This means that the actual effort or scope can be 4 times or 1/4 of the first estimates.
A simple kanban board The basic Scrumban board is composed out of three columns: To Do, Doing, and Done. After the planning meeting, the tasks are added to the To Do column, when a team member is ready to work on a task, he/she moves it to the Doing column and when he/she completes it, he/she moves it to the Done column.