So, what do I mean by "Agile?" (Part 3)

Release and Iteration Duration and Structure

Release and Iteration lengths are highly dependent upon local circumstances. But, given the ability, I prefer to do Quarterly Releases and Weekly Iterations.

Quarterly Releases

Quarterly Releases may seem like a long time. But, many businesses are incapable of absorbing change much faster than that. So, unless you’re at a web start-up or in a highly regulated industry, I say try to match your release schedule to an existing organizational heart beat, like quarterly financial reporting. (Though, perhaps you don’t want to try to release new code the same day, week, or month you release financials.)

As for the structure of a release, here’s what I like to see:

  • Twelve development iterations with one day of slack each
  • One review, deployment and planning iteration

Alternatively, I could also support a structure that looked more like this:

  • Three development iterations
  • One slack iteration
  • Three development iterations
  • One slack iteration
  • Three development iterations
  • One slack iteration
  • One review, deployment and planning iteration

A development iteration is a normal iteration. The customer pick stories for the team to build, as described above. A slack day or iteration is just like a development day or iteration except that Team decides what work to take on, from exploratory testing to refactoring items on the Technical Debt Backlog, to spiking new technologies. No new stories are implemented during slack time, though new tests may be added to shore up code coverage. And, the review, deployment and planning iteration is exactly that: review the release, deploy it, and plan the next release.

Weekly Iterations

Short iterations allow for rapid customer feedback. Longer iterations allow for more work to be accomplished. In my experience, Weekly Iterations provide the best balance between getting stuff done and running off into the weeds. Plus, it has the side benefit of guaranteeing you your weekends off!

I like to see the following structure to iterations:

  • Planning happens first thing in the morning on the first day of the week.
  • Review happens on the afternoon of the last day of the week
  • The rest of the time is devoted to implementing user stories, exploratory testing, etc.
  • Except for weekends, which are reserved for personal use

So, what do I mean by "Agile?" (Part 1)

Since you’re reading my blog, I’ll assume that you’re either a relative, or you’re already somewhat knowledgable about agile software development. So, let’s jump right in... (Sorry, Aunt Gina.)

Given my drothers, I prefer to mix and match terminology and practices from Scrum and Extreme Programming. Here’s what I like to do:

Roles & Responsibilities

Product Owner is responsible for: 

  • Defining and/or collecting the set of features to be implemented in the product
  • Maintaining a Product Backlog of User Stories ordered by Business Value
  • Presenting user stories to the Team during Release Planning
  • Selecting user stories to place on the Release Backlog
  • Presenting user stories to the team in more detail during Iteration Planning
  • Selecting user stories to place on the Iteration Backlog
  • Accepting or rejecting user story implementations during Iteration Review
  • Presenting implemented user stories to other stakeholders during Release Review
  • Determining whether or not to deploy software during Release Review
  • Answering questions from the Team throughout the process

The cross-functional Development Team (or Team) is responsible for:

  • Estimating stories with T-shirt Sizes during Release Planning
  • Estimating stories with Story Points during Iteration Planning
  • Splitting large (epic) stories into smaller, more manageable stories 
  • Calculating their team velocity using Yesterday’s Weather 
  • Incremental Design and Test-First Programming of user stories
  • Maintaining a backlog of Technical Debt
  • Maintaining code and test quality with Refactoring
  • Presenting implemented user stories to Product Owner during Iteration Review
  • Assisting Product Owner with presentation of implemented user stories at Release Review
  • Asking questions of the Product Owner throughout the process

Coach (or Scrum Master) is responsible for: 

  • Identifying and resolving roadblocks hindering the Team, including, process, technical and managerial issues, and more.

The Whole Team, which includes the Product Owner, Development Team and Coach, is responsible for:

  • Conducting Release and Iteration Planning meetings
  • Conducting Iteration and Release Review meetings
  • Conducting Iteration and Release Retrospective

Next up: Release & Iteration Duration and Structure