Scrum vs Extreme Programming: What’s the Difference

Scrum and XP are both Agile approaches that share the common concepts of iterative development, working software, release and iteration planning, daily meetings, retrospective, all elements of an Agile process. Both approaches are aligned with each other that sometimes it is difficult to distinguish between a team that is adopting XP while another team is doing Scrum.

Extreme Programming (XP) is an agile software development framework that aims to produce higher quality software and higher quality of life for the development team. XP is the most specific of the agile frameworks regarding appropriate engineering practices for software development.

Scrum is a framework within which people can address complex adaptive problems, while productively and creatively delivering products of the highest possible value. Scrum itself is a simple framework for effective team collaboration on complex products.

The actual differences between Scrum and XP:

1) Both Scrum and Extreme programming works in a time-boxed iteration to finish a set of tasks. Scrum team takes 2–4 weeks to complete this iteration, which is also called Sprint. XP has a shorter iteration of 1–2 weeks. This gives benefit to the team when requirements change rapidly.

2) In the Scrum, product backlog items for the sprint are finalized at the time of planning, beginning of the Sprint. Whereas in extreme programming, the team is flexible and can swap items as long as development has not been started on them.

3) In the case of Scrum, the product owner sets the priority of product backlog items but it is up to the team to decide what will be implemented. In the case of Extreme Programming, items are implemented in strict priority order.

4) Scrum doesn’t focus on any engineering practices, it focuses on the team.

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