A release planning meeting is used to create a release plan, which lays out the overall project. The release plan is then used to create iteration plans for each individual iteration.
It is important for technical people to make the technical decisions and business people to make the business decisions. Release planning has a set of rules that allows everyone involved with the project to make their own decisions. The rules define a method to negotiate a schedule everyone can commit to.
The essence of the release planning meeting is for the development team to estimate each user story in terms of ideal programming weeks. An ideal week is how long you imagine it would take to implement that story if you had absolutely nothing else to do. No dependencies, no extra work, but do include tests. The customer then decides what story is the most important or has the highest priority to be completed.
User stories are printed or written on cards. Together developers and customers move the cards around on a large table to create a set of stories to be implemented as the first (or next) release. A useable, testable system that makes good business sense delivered early is desired.You may plan by time or by scope. The project velocity is used to determine either how many stories can be implemented before a given date (time) or how long a set of stories will take to finish (scope). When planning by time multiply the number of iterations by the project velocity to determine how many user stories can be completed. When planning by scope divide the total weeks of estimated user stories by the project velocity to determine how many iterations till the release is ready.
Extreme Programming Practices - The Release Plan
The development team needs to release iterative versions of the system to the customers as often as possible. The release planning meeting is used to discover small units of functionality that make good business sense and can be released into the customer's environment early in the project. This is critical to getting valuable feedback in time to have an impact on the system's development. The longer you wait to introduce an important feature to the system's users, the less time you will have to fix it.
After user stories have been written you can use a release planning meeting to create a release plan. The release plan specifies exactly which user stories are going to be implemented for each system release and dates for those releases. This gives a set of user stories for customers to choose from during the iteration planning meeting to be implemented during the next iteration. These selected stories are then translated into individual programming tasks to be implemented during the iteration to complete the stories.
User Stories are also translated into acceptance tests during the iteration. These acceptance tests are run during this iteration, and subsequent iterations to verify when the stories are finished correctly and continue to work correctly.
When the project velocity changes dramatically for a couple iterations, or in any case after several iterations, schedule a release planning meeting with the customer and create a new release plan.
Release Planning Meeting
A release planning meeting is used to create a release plan, which lays out the overall project. The release plan is then used to create iteration plans for each individual iteration.
It is important for technical people to make the technical decisions and business people to make the business decisions. Release planning has a set of rules that allows everyone involved with the project to make their own decisions. The rules define a method to negotiate a schedule everyone can commit to.
The essence of the release planning meeting is for the development team to estimate each user story in terms of ideal programming weeks. An ideal week is how long you imagine it would take to implement that story if you had absolutely nothing else to do. No dependencies, no extra work, but do include tests. The customer then decides what story is the most important or has the highest priority to be completed.
User stories are printed or written on cards. Together programmers and customers move the cards around on a large table to create a set of stories to be implemented as the first (or next) release. A useable, testable system that makes good business sense delivered early is desired. You may plan by time or by scope. The project velocity is used to determine either how many stories can be implemented before a given date (time) or how long a set of stories will take to finish (scope). When planning by time multiply the number of iterations by the project velocity to determine how many user stories can be completed. When planning by scope divide the total weeks of estimated user stories by the project velocity to determine how many iterations until the release is ready. Individual iterations are planned in detail just before each iteration begins and not in advance.
The Release Plan
When the final release plan is created it will, no doubt, be displeasing to management. It is tempting to just change the estimates for the user stories. You must not do this. The estimates are valid and will be required as-is during the iteration planning meetings. Underestimating now will cause problems later. Instead negotiate an acceptable release plan. Negotiate until the developers, customers, and managers can all agree to the release plan.
The basic philosophy of release planning is that a project may be quantified by four variables; scope, resources, time, and quality. Scope is how much is to be done. Resources are how many people are available. Time is when the project or release will be completed. And quality is how good the software will be and how well-tested it will be.
Management can only choose 3 of the 4 project variables to dictate, development always gets the remaining variable. Note that lowering quality to less than excellent has unforeseen impact on the other 3. In essence there are only 3 variables that you actually want to change. Also, let the developers moderate the customers desire to have the project done immediately by hiring too many people at one time.
from www.extremeprogramming.org
Release Planning is very important for Software Development with "eXtreme Programming" (XP). See also: