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2 Large Scale Cloud Migration - Coggle Diagram
2 Large Scale Cloud Migration
Approach
(map with "3 Cloud Migration")
Inventory & Discovery
Challenges
Shadow IT
Decentralized IT
Legacy Systems having no documentation
CMDB
Plan
Application and Server Dependencies
Migrate
Optimize / Modernize
Assess / Application Rationalization
Analyze TCO plan of CSPs
Assessing the business value and
technical fitness of each application
Challenges
Interconnected Applications
Sensitive Data
Business Strategy Alignment
III) Migration model
Strategic (Holistic)
Gartner “6 Rs” / 8Rs model
Retain
due to Digital Soverignity, Specific H/W, License
Rehost
Lift and Shift
exact copy of your current environment to
the same type of environment on the cloud
Replatform
Moving analytics data from MySql db to BQ
Refactor
Replace
Retire
Relocate (From one cloud to another)
Repatriate (Going back to original cloud/on-premises)
Potential maturity
path
Rehost => CSP Optimized (Right-Sizing) => Managed Services => Containers & Serverless => Cloud Native Services
Rehost => Monolithic to Microservices => DevOps (Automated CI/CD)
Assessment Criteria
Business Criticality
Technical complexity
Security requirements
Performance needs
Cost considerations
Tactical (Low Hanging Fruits)
Preemptible VMs, Spot Machine
Test Environemnt
Data Archive
People, Process, Technology
Cloud Maturity Assessment
Best Practices
Advanced features
Automated (Templated / Configuration)