""XP is the most important movement in our field today. I predict that it will be as essential to the present generation as the S.E.I. and its Capability Maturity Model were to the last."" --From the foreword by Tom DeMarco The hallmarks of Extreme Programming--constant integration and automated testing, frequent small releases that incorporate continual customer feedback, and a teamwork approach--make it an exceptionally flexible and effective approach to software development. Once considered radical, Extreme Programming (XP) is rapidly becoming recognized as an approach particularly well-suited to small teams facing vague or rapidly changing requirements--that is, the majority of projects in today's fast-paced software development world. Within this context of flexibility and rapid-fire changes, planning is critical; without it, software projects can quickly fall apart. Written by acknowledged XP authorities Kent Beck and Martin Fowler, "Planning Extreme Programming" presents the approaches, methods, and advice you need to plan and track a successful Extreme Programming project. The key XP philosophy: Planning is not a one-time event, but a constant process of reevaluation and course-correction throughout the lifecycle of the project. You will learn how planning is essential to controlling workload, reducing programmer stress, increasing productivity, and keeping projects on track. Planning Extreme Programming also focuses on the importance of estimating the cost and time for each user story (requirement), determining its priority, and planning software releases accordingly. Specific topics include: Planning and the four key variables: cost, quality, time, and scope Deciding how many features to incorporate into a release Estimating scope, time, and effort for user stories Prioritizing user stories Balancing the business value and technical risk of user stories Rebuilding the release plan based on customer and programmer input Choosing the iteration length Tracking an iteration What to do when you're not going to make the date Dealing with bugs Making changes to the team Outsourcing Working with business contracts In addition, this book alerts you to the red flags that signal serious problems: customers who won't make decisions, growing defect reports, failing daily builds, and more. An entire chapter is devoted to war stories from the trenches that illustrate the real-world problems many programmers encounter and the solutions they've devised.