- CMMI Institute

Digitized and Integrated Estimation Framework
Case Study for a Real Life Adoption
Pranabendu Bhattacharyya
Tata Consultancy Services
Principal Consultant. CFPS,PMP
TCS – a CMMI Level 5 Organization
46+
3.931
318,625
120
55+
97.4
Years in Business
Billion US$ in Q3-FY15 revenues
Employees*
Nationalities
Countries where TCS has presence
% of revenues from repeat customers
Customer-centric
Engagement Model
Global Network Delivery
Model (GNDM™)
Full Services Portfolio
Innovation Labs and
Co-Innovation Network
The Need for Predictable Estimates
The overall Annual Software Spend
(Gartner 2014) - $3.8
Estimation is a critical binding factor
Trillion
• Software Projects struggle to
deliver on scope, schedule,
cost, quality and customer
satisfaction
Quality
Cost
Productivity
Estimation
Schedule
Budget
Profit
• Quality of Estimation is a key
factor that determines project
success
If collective estimation accuracy can be increased even by a
minimal percentage,
it will translate to savings of multi-billion dollars
The Challenges in Customer Organization
North America based financial corporation with more than 110 years of
history
• Parent company relationship with TCS for over 10 years
• They were keen to improve their predictability in Application Delivery
After a recent spin off from their parent conglomerate, they were facing
multiple challenges in IT Delivery:






Regular cost and effort overrun(~150-200%)
Increased Project Management effort(>40%)
Recurring losses due to scrapping of projects
Huge costs to induct resources at later stage
No vendor performance comparison to augment outsourcing
Missing deadlines. Unsatisfied Customer . Poor ROI. Revenue losses
Gaps Unearthed - The Goals Set
Organizational Gaps Observed
Primary Goals
 Limited reuse of estimation experience
 Unavailability of standardized rules / guidelines
 Unavailability of varied estimation techniques
 Absence of size estimation technique
 No measurement of productivity/defect density
 Inability to compare vendor performance
 Absence of central repository of estimation
 No estimation traceability/version management
 No formal estimation review or validation
 Implement Standardized
Estimation Framework
 Integrate with PP
 Initiate Organizational
Productivity Base Lining
 Align with OPM & MA
 Digitize Framework
 Deploy CM & VER
TCS Solution Approach
Applied the proven four phased approach for process
improvement
Deliver &
Sustain
Project Timeline – 2 Financial Years
Deploy
Design &
Develop
Determine
Due diligence
Portfolio analysis
Tailoring needs
Customize
Integrate
Digitize
Governance
Version Management
Integrate framework
Educate practitioner
Hand hold
Estimation Repository
Improved predictability
Base-line productivity
Success stories
Sustenance
Continuous improvement
Integrated Estimation Framework
Historical Data
Standardized Model Selection
Estimation Framework
Engagemen
t Type
Size
Estimator
Cost
Calculator
Technology
Process
Estimation
Stage
FTE
Calculator
Schedule
Calculator
Phase-wise
Distributor
AD
Models
Guideline
Effort
Estimator
AM Models
(Support
Model, CR
Model etc.)
Appropriate
Model
Decision Parameters
Assurance
Models
Measurement and
Feedback Adaptor driving
improvement
• Apply Framework
suggested models
• Define Metrics for
measurement and bench
mark
• Collect feedback and
lessons learnt
Package
Models
(Oracle Apps,
SAP etc.)
Deployment and Sustenance
Deployment Cycle
Sustenance Cycle
Develop, Deploy
Deliver, Sustain
Create Self-reliance
within entities
Identify deployment
team
Handhold
Share success stories
Identify Low
Hanging Fruits
Activities
Track Process
Performance
Create Awareness
Create rewards and
recognition
Promote healthy
competition
Create special initiatives
Measure Success Indicators
Showcase Benefits
Benefits Realized to the Customer
Improvement in Scrap Value Reduction

Immediate Benefits
Long Term Benefits
Best-in-class estimation
Effort Variance reduced (5 fold)
Improved accuracy
Reduced Cost/FP (15% - 41% )
Benchmarked productivity
Productivity benchmarks
Historical Repository
Improved budgetary planning
Estimation awareness
Easy vendor bid negotiations
Estimation traceability
CMMi Level 3 Maturity
Version management
Results…
Improvement in Scrap Value Reduction
Scrap Value Reduction
Process
Deployed
Productivity Improvement
Model Effectiveness Analysis
2 variance bands (+20% &
+10%) were defined for
Model Effectiveness Analysis
• Year 1: 3 Models were
used, 26% adoption
coverage
• Year 2: 2 New Models were
introduced along with 3
existing, 55% adoption
coverage
• Year 3: Coverage 80%
The Appraisal
Customer attained CMMi Level 3 Maturity on their
first assessment.
Delight expressed by their Vice President, Enterprise Project
Management “TCS's estimation expertise helped us to define and
implement strong estimation framework in very short
time which helped to reduce the gaps in CMMI level 3
assessments”.
Lessons Learnt
What We Noticed
Metrics
program for
improvement
Collaboration
Tailoring
Feedback for
process
refinement
Multiple
iterations for
improvement
Continuous
improvisation
Critical Success Factors
1
2
End to End Coherent and Flexible Framework
Keep management/operational costs low
3
Central Repository for estimation data and best practices
4
Estimation Traceability and Governance for improved accuracy
5
Built-in Performance Measurement and Benchmarking
6
Well groomed estimation experts and knowledge pool
7
Self-evolving & sustaining Framework built with closed feedback loop
The Next Steps
Promote Estimation practices from Inception
Continuously refine Estimation Process
Compare with Industry benchmarks
Nurture estimation expertise & repository