Kanban, XP and SAFe

Basketly's support team fixes small problems all day and could never plan them into two-week sprints. The core team wants to write better-tested code. And Basketly's parent company has twelve teams that must release together. Three different problems, three different Agile approaches.

The rule

Kanban limits the flow, XP sharpens the craft, SAFe aligns many teams.

Kanban shows work as cards moving across a board, for example To do → In progress → Testing → Done. Its key rule is the WIP limit (work in progress): each column may hold only so many cards. When a column is full, nobody pushes more into it; people help finish what is there. There are no sprints; work is pulled continuously, which suits steady streams like support fixes.

XP (Extreme Programming) is about engineering habits that keep quality high:

• Test-driven development: write a failing test first, then the code to pass it.
• Pair programming: two people at one problem, reviewing as they go.
• Continuous integration: merge and run the automated tests many times a day.
• Small releases and simple design.

SAFe (Scaled Agile Framework) coordinates many Agile teams working on one large product. Teams are grouped into an Agile Release Train and plan together in fixed program increments of several sprints, so their pieces fit at release time. For testers it adds system-level testing across teams on top of each team's own testing.

The shortcut

Match the approach to the problem with one question each: Is work an unplanned stream? Kanban. Is code quality the pain? XP practices. Must many teams ship one product together? SAFe.

The trap is treating a WIP limit as a suggestion. Without it, the Testing column quietly fills with twenty cards and the board hides the jam instead of showing it.

Drills

Answer fast — trust the rule.

Remember

• Kanban limits the flow, XP sharpens the craft, SAFe aligns many teams.
• Ask: unplanned stream? code quality? many teams?
• A WIP limit is a rule, not a suggestion; full columns mean swarm, not start.