Without further ado, here is the collection for calendar week 14, 2011:
Lean Software Management BBC Worldwide Case Study is out! It contains evidence which shows that over the 12-month period, lead time to deliver software improved by 37%, consistency of delivery rose by 47%, and defects reported by customers fell 24% (quote from the source website) by using Lean ideas. Impressive!
Prioritization is quite hard, but Jeff Anderson wrote a very useful article about how to use cost of delay (COD) functions to prioritize product delivery. I really liked the different COD profiles along with their proper definition.
There were two major changes this week. First Guardian switched from Java to Scala, and afterwards Twitter moved from Ruby on Rails to a Java based solution. While Guardian aimed for a shorter release cycle, Twitter wanted to improve its search performance.