Process Efficiency in Scrum – Why it Matters and How to Measure it

The process efficiency of executing a story on a Scrum team is the most important metric for team performance, because a team can easily double velocity in one sprint by driving process efficiency up over 50%. An Indian team asked me what KPIs they should use and I told them just use process efficiency. They drove it to 80% within three days and on the fourth day had completed all work for a two-week sprint.

This phenomenon has been documented previously in an IEEE paper Scrum and CMMI - Going from Good to Great: Are You Ready Ready to Be Done Done C. Jakobsen and J. Sutherland, in Agile 2009, Chicago, 2009.

Process efficiency is defined as the real work time divided by the calendar time to get to done. The required data is easily available in any Scrum tooling. What we want to see is average process efficiency for stories completed in a sprint in real time. We want to abandon hours as a reporting tool for Scrum teams as data on over 60,000 teams in a Rally survey shows that the slowest teams use hours. The fastest teams use small stories, no tasking, and no hourly estimation. How can we estimate process efficiency for these teams?

Here is a simple way to calculate process efficiency for one story. If the velocity of the team is 50 and the story is 5 points then the real work time for the story can be estimated to be 5/50 of a sprint. If the story is started at the beginning of the sprint and finished at the end of the one week sprint then it uses 5 days of a 5-day sprint or 1 sprint. If we divide 5/50 by 1 we get 10%. Make that number more than 50% and you will double velocity.

In order for a team to improve process efficiency, they will have to stop multi-tasking and execute the Swarming: One-Piece Continuous Flow pattern. This is well known to radically increase the flow of story completion and is fundamental to lean production at Toyota.

Recently I met with Frank Verbruggen who is working on a Ph.D. thesis on the process efficiency of Agile teams. He wrote a nice blog on the topic after our meeting.

 

The post Process Efficiency in Scrum – Why it Matters and How to Measure it appeared first on Scrum Inc.


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