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8/13/2019 Agile Methods SlideShare
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Get Ready for
Agile Methods!
How to manage constant andrapid change in IT projects
Dr Dimitris Dranidis
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Get Ready for Agile Methods * D Dranidis 2
Presentation outline
Traditional methodologiesProblems
Agile methodsExtreme ProgrammingSCRUM
Conl!sions
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Get Ready for Agile Methods * D Dranidis "
Driving forces
Deliver quickly.
Change quickly.
Change often.
These three driving forces compel us torethink traditional software engineering
practices.
## $im %ighsmith
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Traditional
methodologies
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Get Ready for Agile Methods * D Dranidis &
Classic
Waterfall development model
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Get Ready for Agile Methods * D Dranidis '
Characteristics of the
Waterfall development model %ea(y do!mentation
E(ery )hase deli(ers aom)lete do!ment
ate )rod!t deli(ery +ig#bang a))roah ,o ode is -ritten before the Coding )hase
ate feedba. / lo- !stomer in(ol(ement C!stomer is in(ol(ed at the beginning and at the
end of the )ro0et1
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The problems
+!siness en(ironment hanges at
inreasing )ae1
Un)reditability of re3!irements
Traditional methodologies fail to satisfy
en(ironment hanges d!e to4Resistane to hange
Change inreases ost
Conformane to an initial )lan
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Cost of change
ate diso(ery of design defets
Changingre3!irements
Res!lt4 ostly o(er#r!ns
and6 often6
)ro0etanellation1
7aterfall tries to avoid changeby free8ing re3!irements
9contracts:
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Risk
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Customer feedback was late
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!ollowing plans when feedback is
absent
7itho!t feedba.
7ith feedba.
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"ow can we deal with#
Contin!o!s hange@Change is ine(itable
Un)reditable re3!irements@
%igh ris.s@
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$gile methods
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$gile methods
Agile flexible adaptable
Embrae hange Try to red!e ost of hange
o!s on !stomer satisfation 9and feedba.:
rather than onformane to a )lan Early )rod!t deli(ery
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$gile methods value more
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Common characteristic of all agile methods%
&terative process De(elo)ment is bro.en
do-n in short iterations E(ery iteration
re)eats a small 7aterfallF Deli(ers some f!ntionality
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Get Ready for Agile Methods * D Dranidis >5
'CR()
Soft-are de(elo)ment )roess for small teams
9max ;: and small )ro0ets 9fe- months:
ery sim)le6 only (ery fe- )rini)les and r!les Em)hasis on agile project management)raties
Toyota !ses it sine the early >;;?s
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'CR() process overview
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Get Ready for Agile Methods * D Dranidis 2?
&nitial planning phase
Establish (ision6
b!dget
Initial ProductBacklog ist of identified6
)rioriti8ed feat!res
Pre)ared by the!stomer
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'prints * iterations
>"? day iterations
S)rint )lanning
S)rint
Daily Sr!m meetings
S)rint re(ie-
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'print planning
S)ring ba.log ist of feat!res to be
im)lemented in the!rrent S)rint
The most im)ortant
feat!res from the
Prod!t +a.log
Ex)anded to list of
tas.s by team
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Get Ready for Agile Methods * D Dranidis 2"
'CR() * 'prints
The team is left aloneand )rod!es the bestsoft-are )ossible
,o hanges are allo-ed duringa s)rintAnything an hange before and after
Daily SCRUM meetings
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Get Ready for Agile Methods * D Dranidis 2B
Dail+ 'CR() meetings
>& / "? min!tes stand#!)meetings
at the same )lae at the same
time e(ery -or. day H!estions to be ans-ered byeah team member4
!hat have you done since the last scrum meeting" !hat obstacles stand in the way" !hat do you plan on doing between now and the next scrum
meeting"
Managements role: remo(e any obstales and to s!))ly all neessary reso!res1
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'print review
At the end of a s)rint4Meeting -ith all sta.eholders
Prod!t demonstration
Anything an be hanged
Contin!e@
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'CR() closure phase
Com)letes )rod!t
de(elo)ment
I)erational de)loyment Do!mentation
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'CR() Roles%
Product owner ,Customer- Res)onsible for reating and
)rioriti8ing the Prod!t +a.log
Chooses goals for the next
S)rint
Re(ie-s the system after the
S)rint
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'CR() Roles%
'crum Team ,developers- Ex)and the S)rint +a.log to
Tas.s
7or. on the S)rint +a.log
tas.s
De(elo) the system
Daily meetings
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'CR() Roles%
'crum )aster ,Pro.ect )anager- Ens!res Sr!m )raties
are follo-ed
Mediator bet-een
management and team
Remo(es obstales
Cond!ts S)rint re(ie-
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'CR() /ogs%
Product 0acklog Je)t by the Prod!t
o-ner 9C!stomer:
ist of identified6)rioriti8ed tas.s
Dri(es team ati(ity
U)dated and )rioriti8ed
before eah s)rint
Che.ed in eah meeting
http://blogs.microsoft.co.il/blogs/kolbis/Sprint1Planning_5FB7F323.jpg8/13/2019 Agile Methods SlideShare
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'CR() /ogs%
Product 0acklog
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'CR() /ogs%
'print 0acklog ist of tas.s to be
om)leted by the Sr!mTeam in the !rrent
S)rint1 Tas.s in the range of B#
>' ho!rs
stimates are updateddail!" Total estimated time
calculated
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'CR() /ogs%
'print 0urn*down graphIdeal
#ctual Remaining
estimated
time toom)leteall tas.s
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'CR() Practices%
Pro.ect management 11 Self#direted teams
$o guidancefrom management or %crum Master Don=t add to iteration
$othing changes during a sprint Sr!m Master fire-all
Team is not interrupted &! an!one %crum Master removes o&stacles
Deision in one ho!r Deisions for remo(ing blo.s are ta.en immediately Bad decisions are &etter than no decisions
+lo.s remo(ed in one day
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'CR() Practices%
Pro.ect management 11 'hickens and Pigs
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2ther 'CR() practices
Small teams
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'CR()1 the name#
# scrum is a team
pack in $ugby
%verybody in the packacts together with
everyone else to
move the ball down
the field
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3P
45tremeProgramming
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Get Ready for Agile Methods * D Dranidis ";
!our 6ariables 111
Control (ariables of soft-are de(elo)ment Cost
A(ailable b!dget Time
Pro0et d!rationH!ality
Prod!t 3!ality So)e
Prod!t feat!res
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!our 6ariables 111
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Get Ready for Agile Methods * D Dranidis B>
!our 6ariables 111
All (ariables sho!ld be (isible to !stomer
So)e is the best (ariable to ontrolix ost6 time and 3!ality
Ad0!st so)e orres)ondingly
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3P Practices
KP is based on the
extreme a))liation of
>2 )raties thats!))ort eah other1
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78 3P Practices
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3P Practices%
Planning 9ame 11111 Pieces: !ser stories
Re3!irements on index ards
7ritten by the !stomer
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3P Practices%
Planning 9ame 11111 Pla!ers: !stomer L de(elo)er
C!stomer
deides )riorities9+!siness (al!e:
De(elo)er estimates effort
)alue and *isk first"
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3P Practices%
Planning 9ame 11111
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3P Practices%
Planning 9ame 11111
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Get Ready for Agile Methods * D Dranidis B5
3P Practices%
Planning 9ame 11 End of iteration
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3P Practices%
!re:uent Releases A release yle is !s!ally !) to" months
A release yle onsists of
iterations !) to " -ee.s
#" days
small and fre3!ent releases)ro(ide fre3!ent feedba.from the !stomer
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3P Practices%
Pair programming 11 T-o )rogrammers sit
together in front of a-or.station
one enters ode one re(ie-s the ode and
thin.s
Pair )rogramming is a dialogbet-een t-o )eo)le trying to
sim!ltaneo!sly )rogram and!nderstand ho- to )rogrambetterF6 &ent 'eck
Continuous qualityinspection(
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3P Practices%
Pair programming 11 Pairs hange ontin!o!sly 9fe- times in a day:
e(ery )rogrammer .no-s all the as)ets of thesystem
a )rogrammer an be easily re)laed in the middle ofthe )ro0et
Ens!res ontin!o!s ode ins)etion
Costs >?#>& more than stand#alone)rogramming b!tN1 Code is sim)ler 9fe-er IC: -ith less defets 9>&:
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3P Practices%
2n*site customer The !stomer m!st al-ays be a(ailable toans-er 3!estions
resol(e ambig!itiesset )rioritiesre(ie- the )rod!t
C!stomer is onsidered )art of the team Contin!o!s feedba.
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Conclusions
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Re:uirements for the success of
agile methods Collaborati(e en(ironment Peo)le#entered organi8ations Small to medi!m si8ed teams
9a(g1 ; )ersons: Common o)en -or.)lae Commitment
C!stomer ommitmentManagement ommitment De(elo)ers ommitment
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Wrap*up
Agile methodologies in a fast hanging-orld
m&race change" The )eo)le fatorTr!st yo!r team
User in(ol(ement
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Thank you!
)t is not the strongest of the
species that survives nor
the most intelligent thatsurvives. )t is the one that is
the most adaptable to
change.Charles Dar-in
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45perience in software pro.ect
management O>? years of management of O&? short 9'#;
)ms: soft-are )ro0ets