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TROIS PETITES HISTOIRES DE…

DETTE TECHNIQ UE

“Words pay no debts.“

― William Shakespeare
AGILE LINGO
24h

PO

As a Client, I want to

2 semaines
As a Client, I want to

As a Client, I want to

+
+
+

—

As a Client, I want to

As a Client, I want to

As a Client, I want to

Ve l o c i t é

S T O RY
POINTS

As a Client, I want to
BUSINESS
VA L U E
I L É TA I T
UNE FOIS…
I L É TA I T U N E F O I S …
I L É TA I T U N E F O I S …
I L É TA I T U N E F O I S …
I L É TA I T U N E F O I S …

+
+
I L É TA I T U N E F O I S …

550

PROJECTION

Story Points

SANS GESTION DE DETTE

280

50 %
Dette technique accumulée

Croissance de la dette

SP Produits
AU DÉBUT FUT…

LE RUSH

L E S C H E VA L I E R S D E L A D E R N I È R E P R E M I È R E C R O I S A D E

“Fools rush in where angels fear to tread.“

― Alexander Pope
LE RUSH

ITÉRATIONS

$

$

$

$

$

$

…
LE RUSH
LE RUSH

Story Points

550

Dette technique accumulée

Croissance de la dette

SP Produits
LE RUSH

550

25% de SP “perdus” au total
20 % de ‘poids’ de la dette en moins

Story Points

405

135

33 %
Dette technique accumulée

Croissance de la dette

SP Produits (Rush)

SP Produits (initiaux)
LE RUSH

M O R A L E D E L’ H I S T O I R E
LEGACY PRIS EN CHARGE
E X P E R I M E N TA T I O N
COMPÉTENCES A JOUR
S A T I S FA C T I O N P O
S A T I S FA C T I O N D E V

PA S L E T E M P S ( S E PA R É M E N T ? )

SPRINT ‘PERDU’

JAMAIS LE TEMPS DE FINIR

ACCUMULATION STOPPÉE
DETTE ABAISSÉE
P R O C E S S U S FA C I L E

CYCLIQUEMENT

SCRUM ‘CLASSIQUE’
LE RUSH
Q U E L Q U E T E M P S P L U S TA R D …

LES SPÉCIALITÉS
SACRÉ GRAAL

“The expert knows more and more about less and less
until he knows everything about nothing.”

― Mahatma Gandhi
LES SPÉCIALITÉS

ITÉRATIONS

$

$

$

$

$

…
LES SPÉCIALITÉS
LES SPÉCIALITÉS

Story Points

550

Dette technique accumulée

Croissance de la dette

SP Produits
LES SPÉCIALITÉS

550

20% de SP “perdus” au total

440

Story Points

40 % de ‘poids’ de la dette en moins

Dette technique accumulée

Croissance de la dette

SP produits (Spécialités)

SP produits (Rush)

14 %
SP produits (initiaux)

62
LES SPÉCIALITÉS

M O R A L E D E L’ H I S T O I R E
LEGACY PRIS EN CHARGE
E X P E R I M E N TA T I O N

S E U L E M E N T PA R S P É C I A L I T É S

COMPÉTENCES A JOUR

S E U L E M E N T PA R S P É C I A L I T É S

S A T I S FA C T I O N P O
S A T I S FA C T I O N D E V
ACCUMULATION STOPPÉE
DETTE ABAISSÉE
P R O C E S S U S FA C I L E

S I M O N TA N T E S T ‘ R A I S O N N A B L E ’

AUTRE SPÉCIALITÉS ?

RALENTIE

‘HYDRE’

DISCPLINE
LES SPÉCIALITÉS
POUR FINIR…

A M É L I O R AT I O N L O G I C I E L
AKA

SYSTEM IMPROVEMENT

“Improvement begins with I.”

― Arnold H. Glasow
LES AMÉLIORATIONS LOGICIELS

ITÉRATIONS

$

$

$ $

$

$

…
LES AMÉLIORATIONS LOGICIELS
LES AMÉLIORATIONS LOGICIELS

Story Points

550

Dette technique accumulée

Croissance de la dette

SP Produits
LES AMÉLIORATIONS LOGICIELS

550

25% de SP “perdus” au total
reduction lente mais régulière de la dette

Story Points

412

Dette technique accumulée

Debt Growth

SP produits (SI)

SP produits (Spécialités)

SP produits (Rush)

1%

SP produits (initiaux)
LES AMÉLIORATIONS LOGICIELS

M O R A L E D E L’ H I S T O I R E
LEGACY PRIS EN CHARGE
E X P E R I M E N TA T I O N
COMPÉTENCES A JOUR
S A T I S FA C T I O N P O

S I M O N TA N T E S T ‘ R A I S O N N A B L E ’

S A T I S FA C T I O N D E V
ACCUMULATION STOPPÉE
DETTE ABAISSÉE

LENTEMENT

P R O C E S S U S FA C I L E

DISCIPLINE
LES AMÉLIORATIONS LOGICIELS
http://www.construx.com/10x_Software_Development/Technical_Debt/
http://easyart.github.io/2013/10/12/on-technical-debt/
http://insideintercom.io/there-are-no-small-changes/

github.com/bruno-morel
@brunoyvanmorel
linkedin.com/in/morelbruno
Trois petites histoires de dette - sans notes de présentation

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Trois petites histoires de dette - sans notes de présentation