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

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Insurance as a Service. ©Syncier 1 of migrating hundreds of legacy applications to a cloud native platform

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CIO Let’s bring all our web applications onto a cloud native platform. First priority: time.

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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

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Insurance as a Service. ©Syncier 4 ENTERPRISE CLOUD NATIVE We enable regulated enterprises to leverage cloud native technology.

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Insurance as a Service. ©Syncier The Architect’s Point of View

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6 Visibility

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Cloudalyzer: A single source of truth for migration-related software landscape information Insurance as a Service. ©Syncier 7 Tableau analysis MIGRATION DATABASE QAVALIDATOR SONARQUBE EAM TOOL QUESTIONNAIRES JIRA XLS STATIC ANALYSIS IBM MIGRATION TOOL … MIGRATION TASKS BASIC TOUR-DE-MIGRATION SYSTEM PROPERTIES OWASP Scanner jQAssistant

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8 Emergent design of cloud native software landscapes

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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

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10 How to make applications more cloud native?

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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

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Insurance as a Service. ©Syncier The Project Manager’s Point of View

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Management support ❏ Strong management support ❏ Clear scope & priorities ❏ Courage to drive the change to cloud native development

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Project marketing

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Co-location One co-location space for ❏ support- & ❏ industrialization team Visiting migration team members (could book support slots)

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Industrialization

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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

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Transparency App-Support Activities & Milestones Quality GoLive Planning Operational

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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

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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

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