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Insurance as a Service. ©Syncier 1
of migrating hundreds of
legacy applications to a
cloud native platform
CIOLet’s bring
all our web applications
onto a cloud
native platform.
First priority:
time.
3
❏ All 152 legacy applications
migrated and in production
within 17 months
❏ All security-hardened and
modernized to containerized
12-factor-apps
❏ Benefits leveraged: strong
business case, higher
availability, more agile teams
Insurance as a Service. ©Syncier 4
ENTERPRISE CLOUD NATIVE
We enable regulated enterprises to leverage
cloud native technology.
Insurance as a Service. ©Syncier
The
Architect’s
Point of View
6
Visibility
Cloudalyzer: A single source of truth for migration-related software landscape information
Insurance as a Service. ©Syncier 7
Tableau analysisMIGRATION
DATABASEQAVALIDATOR
SONARQUBE
EAM TOOL
QUESTIONNAIRES
JIRA
XLS
STATIC ANALYSIS
IBM MIGRATION TOOL
…
MIGRATION TASKS
BASIC
TOUR-DE-MIGRATION
SYSTEM
PROPERTIES
OWASP Scanner
jQAssistant
8
Emergent design
of cloud native
software landscapes
An emergent design approach for large-scale application migration to a cloud plattform
Insurance as a Service. ©Syncier 9
APPLICATION BLUEPRINT
MIGRATION COOKBOOK
TOUR-DE-MIGRATION
GOLIVE READINESS CHECKLIST
Q1/17 Q2/17 Q3/17 Q4/17 Q1/18 Q2/18
APPLICATION MIGRATION
CLOUD PLATFORM SETUP
PRE-STUDY
10
How to make applications more
cloud native?
Cloud friendly applications: A sweet spot for legacy apps
11
Cloud Friendly Apps
… and enhance each
application according the 12
factors
Put the monolith into a container
Insurance as a Service. ©Syncier
The
Project Manager’s
Point of View
Management support
❏ Strong management support
❏ Clear scope & priorities
❏ Courage to drive the change to
cloud native development
Project marketing
Co-location
One co-location space for
❏ support- &
❏ industrialization team
Visiting migration team members
(could book support slots)
Industrialization
ARCHITECTURE TEAM
DOZENS OF MIGRATION PROJECTS RUNNING IN PARALLEL
(organized in release trains)
‣ Training sessions
‣ Support sessions
‣ Co-Location & remote
‣ Guidance / best practice sharing (cookbook,
sample application)
‣ Unified development environment (via
GitHub)
‣ Standard base images
‣ Pre-migrated frameworks
‣ Solutions: Security service, ambassadors
INDUSTRIALIZATION TEAM
‣ Application blueprint
‣ Migration database
SUPPORT TEAM
‣ Feedback
Transparency
App-Support
Activities & Milestones
Quality
GoLive Planning
Operational
Insurance as a Service. ©Syncier
The
Developer’s
Point of View
https://youtu.be/yB6Zl8nqqqE
https://speakerdeck.com/adersberger/patterns-and-pains-of-
migrating-legacy-applications-to-kubernetes
https://speakerdeck.com/adersberger/the-good-the-bad-and-the-ugly-of-
migrating-hundreds-of-legacy-applications-to-kubernetes
Insurance as a Service. ©Syncier 21
Talk to us!
Robert Bichler
Project Manager, Allianz Deutschland AG
robert.bichler@allianz.de
Dr. Josef Adersberger
Lead Syncier Cloud, Syncier GmbH & CTO QAware GmbH
josef.adersberger@syncier.com
The good, the bad, and the ugly of migrating hundreds of legacy applications to a cloud native platform

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The good, the bad, and the ugly of migrating hundreds of legacy applications to a cloud native platform