Quick answer
Swimlanes split the board horizontally — by class of service, work type or team — so different kinds of work flow through the same stages without mixing.
The uses
Class of service (expedite/standard/fixed-date), work type (features/bugs/ops), or assignee groups — parallel lanes, shared columns.
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Class of service
Expedite lane on top with its own WIP limit — emergencies move without breaking the flow.
Work types
Features vs bugs vs maintenance in separate lanes — visible portfolio mix on one board.
Caution
Lanes multiply WIP — each lane needs its own limits or the total grows silently.
Bottom line
Swimlanes split the board horizontally — by class of service, work type or team — so different kinds of work flow through the same stages without mixing.
FAQ
If this post was helpful, you might also enjoy Project Manager vs Business Analyst: Key Differences Explained (2026) and Project Calendar: How to Build One (Step-by-Step Guide).
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