1. Critical Factors for Success
Experience gained from managing with FDD in the Fortune 100
David J. Anderson

2. Processes in FDD Five collaborating processes 1.Develop an Overall
Model
2.Build a
Features
List
3.Plan By
Feature
4.Design
5.Build
A categorized list of features
A development plan
A design package (sequences)
Detailed how-to content
Completed client-valued function
Shape and core methods
An object model + informal features list + notes on alternatives

3. Transparency & Good Governance
Value-chain aligned with interests of consumers and stock holders
End-to-end traceability
Correct metric selection
Simple, relevant (aligned), self-generating, leading (predictive)
Cumulative Flow Diagram
WIP Inventory
Lead Time
Production Rate
Quality (Bugs/Feature)

5. Parking Lot Diagram Client-value oriented buffer management chart 77%
18 Oct 02
Online
Bill
Payment
18%
01 Feb 03
Enhanced
Personalization
41%
10 Apr 03
Real-time
Statement
84%
27 Jul 02
Targeted
Marketing
Messages
27%
9 Dec 02
Christmas
Offer
33%
18 Nov 02
Thanksgiving
53%
11 Nov 02
Bundles &
Promotions
Legend
Critical
Watch
On-target
Client-value oriented buffer management chart

6. Lead Time & Batch Size Lead Time Large Batch Size is Problematic
Requirements are perishable
Half-life is short, atrophy is high
Realizable value of differentiated features depreciates quickly
Value of Information locked in as code depreciates over time
Large Batch Size is Problematic
More work-in-process, more people, more communication overhead, longer lead time, more atrophy, more rework

7. Quality & Variance Quality Understanding Variance
Right first time through incremental architecture (wide rather than deep), spiral model
Internal, “Build Integrity In”, Inspections
External, Automated tests, Test First Planning
Understanding Variance
Common Cause – no amplifying reaction
Slack required to absorb variance
Probabilistic rather than deterministic management

8. Identify and Manage Constraint
Focus on what is constraining progress or productivity
Constraint can be ambiguity or uncertainty
Of Domain, Requirements, Schedule, Technology, Resources
Apply management time to constraint
Apply best people to constraint
Most experience, most skilled
Maximum ROI from focused investment in constraint

9. Inertia of Process Waterfall Gated Model
Corporate process stuck in paradigm
Long Lead Time
Large Batch Size
Greater Atrophy, More Waste
12 month annual planning cycle
Deterministic rather than Probabilistic
PMI model
ISO model
SEI-CMM model