Agile Chennai 2023 | Unleashing Agility: Triumphs Over Challenges in Legacy Modernization - Andrews Roberta Mary

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AgileChennai.com Unleashing Agility: Triumphs Over Challenges in Legacy Modernization by Andrews Roberta Mary Lead Consultant, Thoughtworks

Leadership & Management

© 2023 Thoughtworks | Confidential
Unleashing Agility :
Triumphs over Challenges in Legacy
Modernization
Andrews Roberta Mary R
Lead Consultant
1
www.agilechennai.com

© 2023 Thoughtworks | Confidential
About Me & My Role in spearheading the
Modernization project
2
● A Lead Consultant with Thoughtworks
● Close to 1.5 decades of experience in the IT
industry
● Quality Evangelist, Iteration Manager, Project
Manager
● Currently working on setting up org test strategy
for an European travel industry giant
● TW QA Community Lead, Chennai
● True transformation journey on Enterprise
Modernization
www.linkedin.com/in/andrews-roberta-mary-r
www.agilechennai.com

© 2023 Thoughtworks | Confidential
●One of the top insurers in Europe
●Claim creation and disbursement
system
●90s tech
●Multiple small fragile subsystems
●Modernized both the backend rule
engine and frontend of the
application
Legacy Project Landscape
3
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Waterfallish
Model
Developing
developers
Fatigued
and
Concerned
User base
Outdated
Technology
Low Performing
applications
Legacy Project Challenges
4
●Outdated Tech - JSF
●Slow system
●Manual process - diary notes
●Workforce new to agile & tech
●Gaining Understanding of the
existing system
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Key Success Metrics
●Deployment Frequency (DF) -
●Lead Time to Changes (LTTC) -
●Change Failure Rate (CFR) -
●Mean Time To Recovery (MTTR) - Infra cost saving
by 20%
Adoption rate
improvement by
4x
5
Claim payment
time reduced
from 3mins to
30sec
Close to zero
major production
issues
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Agile Strategies
used for
Overcoming
Challenges
6
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Deep Dive
and
Understand
Fruitful
Iterations
Early &
Continuous
Testing
with
Feedback
Loops
Executive
Buy in
Adoption
Enablement
7
Key Strategies Adopted for Overcoming Challenges
7
© 2022 Thoughtworks
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Deep dive &
Understand
8
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Deep Dive & Understand
9
● Documentation
● Business context and rules
● End user study
● Coming up with their list of pain points
● Reverse engineering
● Handshake points, Dependencies
● Risk assessment
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Fruitful Iterations
10
www.agilechennai.com

© 2022 Thoughtworks | Confidential 11
Why? Examples
● Not just replace the system
● Performance
● Eliminating mundane and repetitive tasks
● Adding helpers/autofills to make forms easier
to use
● Adding notifications about changes in state of
concerned items in the system
● Showing insights and calculations for faster
decision-making
● Enabling easier access to frequently used
references/documents
● Introducing fraud identification and prevention
www.agilechennai.com
Continuous Value Addition
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Early & Continuous
Testing
12
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Compare³
● User experience
● Data Projection - deduplication
● Ease of use
● Business calculation logics
13
13
● Performance
● Contract test the integration
points
● Automation - Test pyramid,
stub, framework
Other Aspects
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Executive Buy in
14
www.agilechennai.com

© 2023 Thoughtworks | Confidential
● Strangulation Plan
● Legacy subsystem retirement
roadmap
● Low hanging fruits
● Results in every iteration
● Quality metrics - revenue, complaints
● Infrastructure cost savings
Fiscal Prudence
15
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Adoption
Enablement
16
www.agilechennai.com

© 2023 Thoughtworks | Confidential
● Pragmatism / Flexibility
● Resistance to change
● Everett Rogers’ innovation adoption life
cycle
● Most used features to be onboarded
first
● Before/after tests
● User surveys
Enable Adoption of the Modernized System
17
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Byproduct
Successes
18
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Client
Enablement
Java server faces
to React, Cobol to
Java
Agile
Transformation
30% quicker TTM
Great collaboration
and sense of
ownership through
RRs
Cross
functional
teams
Lead time
improvement by
20%
Continuous
Deployments
Quarterly
releases to
Weekly feature
releases
Delighted
Users &
Business
20 yrs record
history
19
Byproduct successes through Agile Practices
19
© 2022 Thoughtworks
www.agilechennai.com

© 2023 Thoughtworks | Confidential 20
Q&A
www.agilechennai.com

© 2023 Thoughtworks | Confidential
Thank you
Andrews Roberta Mary R
andrewsr@thoughtworks.com
21
www.agilechennai.com

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Agile Chennai 2023 | Unleashing Agility: Triumphs Over Challenges in Legacy Modernization - Andrews Roberta Mary

2. © 2023 Thoughtworks | Confidential About Me & My Role in spearheading the Modernization project 2 ● A Lead Consultant with Thoughtworks ● Close to 1.5 decades of experience in the IT industry ● Quality Evangelist, Iteration Manager, Project Manager ● Currently working on setting up org test strategy for an European travel industry giant ● TW QA Community Lead, Chennai ● True transformation journey on Enterprise Modernization www.linkedin.com/in/andrews-roberta-mary-r www.agilechennai.com

3. © 2023 Thoughtworks | Confidential ●One of the top insurers in Europe ●Claim creation and disbursement system ●90s tech ●Multiple small fragile subsystems ●Modernized both the backend rule engine and frontend of the application Legacy Project Landscape 3 www.agilechennai.com

4. © 2023 Thoughtworks | Confidential Waterfallish Model Developing developers Fatigued and Concerned User base Outdated Technology Low Performing applications Legacy Project Challenges 4 ●Outdated Tech - JSF ●Slow system ●Manual process - diary notes ●Workforce new to agile & tech ●Gaining Understanding of the existing system www.agilechennai.com

5. © 2023 Thoughtworks | Confidential Key Success Metrics ●Deployment Frequency (DF) - ●Lead Time to Changes (LTTC) - ●Change Failure Rate (CFR) - ●Mean Time To Recovery (MTTR) - Infra cost saving by 20% Adoption rate improvement by 4x 5 Claim payment time reduced from 3mins to 30sec Close to zero major production issues www.agilechennai.com

7. © 2023 Thoughtworks | Confidential Deep Dive and Understand Fruitful Iterations Early & Continuous Testing with Feedback Loops Executive Buy in Adoption Enablement 7 Key Strategies Adopted for Overcoming Challenges 7 © 2022 Thoughtworks www.agilechennai.com

9. © 2023 Thoughtworks | Confidential Deep Dive & Understand 9 ● Documentation ● Business context and rules ● End user study ● Coming up with their list of pain points ● Reverse engineering ● Handshake points, Dependencies ● Risk assessment www.agilechennai.com

11. © 2022 Thoughtworks | Confidential 11 Why? Examples ● Not just replace the system ● Performance ● Eliminating mundane and repetitive tasks ● Adding helpers/autofills to make forms easier to use ● Adding notifications about changes in state of concerned items in the system ● Showing insights and calculations for faster decision-making ● Enabling easier access to frequently used references/documents ● Introducing fraud identification and prevention www.agilechennai.com Continuous Value Addition www.agilechennai.com

13. © 2023 Thoughtworks | Confidential Compare³ ● User experience ● Data Projection - deduplication ● Ease of use ● Business calculation logics 13 13 ● Performance ● Contract test the integration points ● Automation - Test pyramid, stub, framework Other Aspects www.agilechennai.com

15. © 2023 Thoughtworks | Confidential ● Strangulation Plan ● Legacy subsystem retirement roadmap ● Low hanging fruits ● Results in every iteration ● Quality metrics - revenue, complaints ● Infrastructure cost savings Fiscal Prudence 15 www.agilechennai.com

17. © 2023 Thoughtworks | Confidential ● Pragmatism / Flexibility ● Resistance to change ● Everett Rogers’ innovation adoption life cycle ● Most used features to be onboarded first ● Before/after tests ● User surveys Enable Adoption of the Modernized System 17 www.agilechennai.com

19. © 2023 Thoughtworks | Confidential Client Enablement Java server faces to React, Cobol to Java Agile Transformation 30% quicker TTM Great collaboration and sense of ownership through RRs Cross functional teams Lead time improvement by 20% Continuous Deployments Quarterly releases to Weekly feature releases Delighted Users & Business 20 yrs record history 19 Byproduct successes through Agile Practices 19 © 2022 Thoughtworks www.agilechennai.com

Editor's Notes

Examples Be clear on Reason for cube
How to find out a low hanging fruit etc

Agile Chennai 2023 | Unleashing Agility: Triumphs Over Challenges in Legacy Modernization - Andrews Roberta Mary

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Editor's Notes