Introduction of Kanban for large scale maintenance at mobile.international GmbH / OOP 2010

Kanban for large scale off-shored maintenance @ mobile.de January 26 2010 - Munich Feedback to mandrezak@team.mobile.de

feedback for all things Kanban at OOP 2010: #oopkanban

small bugs, small and medium features Photo by dolorix - http://ﬂic.kr/p/5mTAvT

national vs. international: dedicated team Photo © Nasa, visible earth

hard to manage, lots of WIP, hierarchical culture

cycle time = 28 days lead time = 52 days

you want half of these times? you have specialized teams? they are distributed?

Enter Kanban! (signal card)

Photo by john w - http://ﬂic.kr/p/8JcFA

10 Photo © Sune Gynthersen, bestbrains.dk

value stream mapping

Input Development QA Production Ongoing Done Ongoing Done

design of Kanban cards

tasks / stories are represented as cards

map cards to value stream on the wall

Input Deelopment QA Production Ongoing Done Ongoing Done

deﬁnition of Work-In-Progress-limits (WIP-Limits) & Pull

Input Development Acceptance Produktion 5 5 Ongoing Done Ongoing Done Pull Fixed WIP-Limits in relevant phases

deﬁnition of input and output-cadence

e.g. weekly prioritization e.g. bi-weekly releases Input Development Acceptance Production 5 5 Ongoing Done Ongoing Done Pull Fixed WIP limits for relevant phases

deﬁnition of done per phase and / or rules on pulling

Kanban cards visualize overall process state and clearly indicate bottlenecks in the process ---> basis for applying TOC and other bodies of production knowledge

Theory of Constraints (light) - Eliah Goldratt: identify bottleneck max. stress on bottleneck eliminate (or minimize) bottleneck Eliah Goldratt - „The Goal“

deﬁnition of WIP limits ≈ reduction of batch size ≈ reduction of lead time (Little‘s law)

Little‘s Law: lead time = WIP / throughput easy to change: discipline / hard to change: Flow mid term change process

estimations ---> calculation of cycle time and lead time

Maintenance - own track

why does Kanban match our requirements?

Chasin‘! low visibility my project Let‘s try! Photo by Balakov - http://ﬂic.kr/p/6knucL

Things are slow I like it! Photo by Dunechaser - http://ﬂic.kr/p/JVEbT

estimations not required

frequent prioritization! -> weekly production incidents any time

Output Queue ﬂexibly coupled to release cycle and hotﬁxes

how did we implement it?

Photo by Dunechaser - http://ﬂic.kr/p/agZnC Semi-dictator style

I wanted desperately

ﬁrst process draft

Input Analyse Development QA Published Deployed 2 2 4 5 Ongoing Done Ongoing Done Ongoing Done

feature branches ! Photo by danorbit. - http://ﬂic.kr/p/3Lj2B9

training via Photo by pt - http://ﬂic.kr/p/VDDV

vacation :-( Photo by wili_hybrid - http://ﬂic.kr/p/56VmT7

QA „doesn‘t join“ the ﬂow Photo by fsudaft - http://ﬂic.kr/p/5DiUfn

not enough integration systems Photo by bobthemtnbiker - http://ﬂic.kr/p/5jpNpM

QA w/ limited availability -> buffer Photo by rev - http://ﬂic.kr/p/6HWEr3

Development QA Development ready f. QA QA 5 5 5 10 2 Ongoing Done Ongoing Done

ﬂow! Photo by ViaMoi - http://ﬂic.kr/p/6qLxQz

Tools!

google docs spreadsheet ... greenhopper 4.0?

enter: sucess, results

Cycle Time 28 30,0 24 22,5 15,0 8 7,5 august september 2 october 0 november 51

Lead Time (2-3 weekly releases) 52 60,0 45,0 28 30,0 22 15,0 august september 0 october 52

once Chaos now controlled

good mood in the team through ﬂow experience

great communication tool

maintenance of whole platform from Jan 2010 w/ Kanban

heavy discussion with uninvolved great buy-in with those involved

1PO 1 Technical Lead 7 developers 1 process guy

Kanban adjustments required

introduction of classes of service for production incidents required: expedite tickets to accomodate SLA

Thanks for your time and attention! contact: mandrezak@team.mobile.de twitter.com/markusandrezak slideshare.com/mandrezak

more on Kanban limitedwipsociety.org 02/2010 - 26. Feb 2010 5.3 - Thu 14:30 - 15:30 articles by Stefan Roock & Bernd Schiffer Stefan Roock & „Was ist dran an Kaban“ Markus Andrezak Trainings w/ David Anderson it-agile.de feedback on all things kanban at #oop2010: #oopkanban

http://mandrezak.tumblr.com	29
http://www.slideshare.net	7
http://flavors.me	1

Introduction of Kanban for large scale maintenance at mobile.international GmbH / OOP 2010

by Markus Andrezak on Feb 01, 2010

Accessibility

Tags

Upload Details

Usage Rights

3 Embeds 37

Statistics

Introduction of Kanban for large scale maintenance at mobile.international GmbH / OOP 2010 — Presentation Transcript