Lean and Agile in Software Development

As this post is quite long, you can get it in PDF here.

Some time ago, at the company where I am currently working, I suggested that we could create some posters about Lean and Agile so that people would keep it in the back of their heads on their day to day work. I also made myself available to explain, to the IT department, what Lean and Agile are all about, but because of lack of time, that explanation ended up never happening.

Lately, I’ve found that there are some people around me that have the desire and need to know a bit more about Lean and Agile, about what they stand for, how their practices should impact our day to day work, and what’s there to gain from it. So I decided to write this post in an attempt to cover that.

I’ve talked about Lean and Agile before, in a post titled What is Lean and Agile about Software Architecture but it had a very restricted spectrum. In this post, however, I want to take it a bit further.

Continue reading “Lean and Agile in Software Development”

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Architecture 1st design step: Partitioning

There are many ways of partitioning an application. Usually, what we do is actually classify the code according to some criteria and organise the code following that criteria.

This chapter of the book explores four criteria:

  • Functionality vs. Domain;
  • Conway’s Law;
  • Geographic constraints;
  • Cultural concerns.

All in all, the idea is that we partition our codebase with long-term local autonomy in mind, according to history, standards and conventions, experience and common sense (Coplien 2010, p.91).

Continue reading “Architecture 1st design step: Partitioning”

What is Lean and Agile about Software Architecture

Good Software Architecture embodies several Lean and Agile principles, always with the same goal of long-term productivity and lightweight feature development.

Delaying structural decisions will outcome in undisciplined structure, which in turn outcomes in waste. Therefore we must think of Software Architecture as an investment that we need to make now to get medium and long term gain.

Continue reading “What is Lean and Agile about Software Architecture”

Stakeholder engagement: Trimming wasted time

In my previous posts, I briefly described the stakeholders. However, they are not Lean nor Agile themselves. What is really important, for Lean and Agile, is how they work together: Everybody, all together, from early on. Continue reading “Stakeholder engagement: Trimming wasted time”