What is the difference between Scrum and Extreme Programming?

Question

A few years ago I have worked on a green field project where we did Extreme Programming. I also see a lot of people mention the Scrum methodology.

Could someone tell me the main differences between Scrum and XP?

Answer 1

I found this article gave a pretty accurate description: here

Answer 2

Scrum is a project management process, XP is a programming practice. Both are "agile" techniques and are often used together.

Scrum outlines a process for identifying and cataloging work that needs to be done, prioritizing that work by communicating with the customer or customer representative, and implementing that work using iterative releases.

When my team first started experimenting with Scrum I found the Implementing Scrum website to be helpful.

Answer 3

Scrum is one component of the Agile development methodology concerning the daily meeting held to discuss progress and XP is a different methodology stressing pair programming and test first development.

Answer 4

I've worked on both. Some of the main differences are that SCRUM focuses on the shorter more structured sprints, and prioritizes back log items. Some of the focuses of XP are more on paired programming, prioritizing the tasks, and more test driven development. Both work in iterations and both are flexible enough to handle a volatile changing project.

Answer 5

Scrum's main goal is to get estimations of how long development will take. XP is more about helping developers get things done as quickly and maintainably as possible.