Darren Mills The Migration Modernization Balancing Act: Navigating Risks and Rewards

GENERATIVE AI DATA & ANALYTICS MIGRATION & MODERNIZATION SaaS DEVELOPMENT
• • •
THE MIGRATION MODERNIZATION BALANCING
ACT:
NAVIGATING RISKS AND REWARDS
Proven strategies to modernize, optimize and streamline your migration and modernization
journey.
06.05.2025

• • •
MEET THE CLEANSLATE EXPERTS
Proven Cloud Leaders Driving Migration, Modernization & Innovation
DARREN MILLS DAVID POINDEXTER
CLOUD LEADER
CHIEF TECHNOLOGY OFFICER
CLOUD LEADER
AWS MODERNIZATION

• • •
THE MIGRATION BALANCING ACT
Weighing Risks vs Rewards

• • •
THE BALANCING ACT
Risks and Rewards Leaders of IT need to balance with Migration and Modernization
Not Migrating
• Market Share Loss from inability to innovate
• Increasing Costs and rising VMware renewals
• Rising Costs to support legacy applications
• Siloed Data is difficult to access
RISKS TO WEIGH
Migration and Modernization
• Drive revenue growth via innovation
and improved time-to-market agility
• Cut capitalized costs like rising licensing
and infrastructure
• Unlock your consolidated data for analytics,
Generative AI and other innovations
Proven Migration Approach
• Standard discovery process and
methodology
leveraging partner tooling
• Proven Migration & Modernization patterns
• Migration funding to help offset costs
• Accelerators with security, automation,
testing and cutover
REWARDS TO GAIN
Migration Risks
• Lack of Tooling and Cloud Expertise
• High Migration Costs
• Unoptimized Cloud Costs
• Migration causing significant downtime
• Migration Fatigue

• • •
MIGRATION METHODOLOGY & DISCOVERY
The details matter.

• Directional Business Case
• TCO Report
• License Position Recommendation
• Right-Sized ARR Forecast
• Migration Journey Insights
• Migration Readiness Assessment (MRA)
• Application, Database, and Storage
Inventory
• 7R Analysis
• Well-Architected Cloud Design
• Wave Plan and Schedule Estimate
• Updated ARR Forecast
• Well-Architected Cloud Tenant
• Migration Landing Zones w/ Security
• Network Connectivity
• Active Directory / User Auth
• DevOps Foundational Tools
• Migration Analysis & Strategy
Refinement
• Updated Wave Plan and Schedule
• Wave-Based Application Migrations
• Relocate Hypervisor Platforms
• Rehost Amazon to EC2
• Replatform to Managed DBs
• Replatform to Containers
• Refactor Legacy Applications
• Repurchase to SaaS Applications
H O W I T W O R K S
ONEOLA MOBILIZE MIGRATE & MODERNIZE
ASSESS
• AWS Migration Evaluator
• Cloudamize
• CloudRays
• Amazon Q Transform
• CAST Highlight
• CloudHedge Dart
• CAST Imaging
• CloudHedge Dart
• Zscaler ZPA / ZIA
• Amazon Application Migration (MGN)
• Amazon Data Migration Service (DMS)
• AWS DataSync | AWS Snow Family
• CloudHedge OmniDeq
DELIVERABLES
PARTNER
TOOLING
HyperCare & Optimization
Provide continuous improvement and optimization to maximize your cloud
investment and unlock the full potential of your cloud journey.
OUR MIGRATION ACCELERATION BLUEPRINT

7R MIGRATION METHODOLOGY
Lower Cost To Run &
Shorter Time To Migrate
Higher long-term Value &
Longer Time to Migrate
RELOCATE REHOST REPLATFORM REPURCHASE REFACTOR RETAIN RETIRE
COTS / SaaS
DESIGN PLATFORM
ADOPT PLATFORM
USE COPY TOOLS
INSTALL / CONFIG
VALIDATIO
N
REDESIGN
DEVELOPMENT
TESTING
DEPLOYMENT
USE MIGRATION TOOLS
Migrate Migrate
DEPENDENCY MAPPING
Modernize Modernize Modernize

• • •
RELOCATE
Move infrastructure to the cloud without purchasing new
hardware, rewriting applications, or modifying your existing
operations.
Cost:
Risk:
$
Low
Example Scenario:
A customer has numerous virtual machines running in their data center that utilize VMware and need to be migrated to AWS.
The Approach:
Utilize AWS Elastic VMWare Service (EVS) to seamlessly migrate Virtual Machines to AWS using native VMware technologies.
Coming Soon... currently in preview with AWS
Key Information:
• Broadcom has eliminated perpetual licenses and switched to a subscription-based model. This has led to higher prices for many customers.
• Broadcom has combined VMware products into several bundles, which may require customers to pay for products they don't want or need.
• Broadcom has discontinued VMware Cloud on AWS, making porting their licensing to the cloud more challenging.

• • •
REHOST
Move an application to the cloud without making any changes to take advantage of cloud capabilities.
Cost:
Risk:
$$
Low
Example Scenario:
A customer has combination of bare metal servers, Virtual Machines and Network storage running in their datacenter that needs to
be migrated to AWS.
The Approach:
Utilize a block-level copy strategy (lift-n-shift) with migration tooling to migrate the infrastructure data to cloud technologies like
Amazon Elastic Compute (EC2).
Key Information:
• Quick Win: fastest path to cloud and is the preferred approach when there is a known datacenter exit date that must be met.
• This strategy has a low level of risk associated with it but could lead to higher cloud infrastructure costs and supportability concerns.
• Modernization of infrastructure should follow the initial migration of infrastructure to help minimize costs and improve supportability.

• • •
REPLATFORM
Move an application to the cloud and introduce some level of optimization to take
advantage of cloud capabilities and reduce operational overhead without major rewrites.
Cost:
Risk:
$$$
Medium
Example Scenario:
A customer has applications that leverage relational databases like Oracle, DB2 or SQL Server that must be migrated to the cloud.
Other scenarios may include containerizing an existing monolithic legacy application.
The Approach:
Utilize migration tooling (lift-shift-n-tinker) to migrate the infrastructure to cloud technologies like Amazon Relational Database
Service (RDS) and AWS Database Migration Service. These AWS managed services have a higher infrastructure cost but lowers the TCO
by providing built in solutions for scalability, backup/recovery and patching.
Key Information:
• This strategy is a good balance between schedule and optimization. These migrations are mostly solved problems with a reduced amount of risk and complexity.
• The migration tools are mature and allow conversions between platforms to occur, like Oracle to PostgreSQL or MySQL, to eliminate licensing costs. However, this
may lean towards Refactor from an effort and impact standpoint.

• • •
REFACTOR
Move an application and modify its architecture by taking full advantage
of cloud-native features to improve agility, performance, and scalability.
Cost:
Risk:
$$$$
High
Example Scenario:
A customer has a legacy monolithic application with a large amount of technical debt that makes a migration to the cloud difficult (but
not impossible). These applications are typically business critical apps that lack agility which can help provide the justification for a
modernization budget.
The Approach:
Design and develop a serverless application with a modern development practices like microservices, full automation and a modern
data tier to leverage the full power of the cloud. These applications may utilize technologies like Amazon Lambda, Amazon
DynamoDB, etc.
Key Information:
• We do not recommend refactoring an application before migrating to the cloud. We would recommend migrating the existing technical stack to the cloud and
immediately begin the modernization journey – otherwise the schedule constraints and data synchronization issues may arise.
• The initial refactor cost often provides a positive TCO due to the reduced costs on cloud spend. We have been able to drive cloud spend down up to 80% in some
scenarios.

• • •
REPURCHASE
Purchase a different product, typically by moving from a traditional licensing
model to a SaaS model for commoditized systems that don’t need custom code.
Cost:
Risk:
$+
Medium
Example Scenario:
A customer has an existing CRM implementation on-premises that they would like to migrate to Salesforce. Additionally, migrating
from on-premises Microsoft workloads to M365 or O365 is another common scenario.
The Approach:
Once a product has been selected (drop-n-shop), the migration effort centers on data integration as the platform is disconnected from
your traditional cloud infrastructure and security.
Key Information:
• Many on-premise platforms have a SaaS counterpart and migration tooling to make this process a more straightforward migration path.
• Find a partner that is strategic to the SaaS provider to help consult on the migration journey.

• • •
RETAIN
Keep applications in your current environment.
Cost:
Risk:
--
None
Example Scenario:
A customer has applications that have a technical or business reason to remain on-premise, like a platform has latency requirements
or it integrates with local hardware, etc. For instance, manufacturing automation platforms or other hardware specific devices.
The Approach:
Confirm the technical or business rationale for the decision and move on to more important applications.
Key Information:
• Common when there are compliance or latency concerns, like connectivity to Mainframe applications and data.
• Not every application was meant for the cloud!

• • •
RETIRE
Decommission applications that are no longer needed in your source environment to reduce technical debt.
Cost:
Risk:
$
Low
Example Scenario
A customer has applications running in their datacenter but may be considered end-of-life by the business or is considered technical
debt that no one had time to address.
The Approach:
Confirm the technical or business rationale for the decision and move on to more important applications.
Key Information:
• Not every application was meant to live forever!
• Sometimes applications sit idle because everyone thinks someone else is using it – fear not, shut it off and see who complains!

• • •
MIGRATION AND MODERNIZATION PATTERNS
Proven patterns are key!

• • •
WELL ARCHITECTED / AWS CAF
6 Pillars of the Well Architected Framework
Running and monitoring systems to
deliver business value and
continually improving processes and
procedures.
Protecting your information systems.
Using IT and compute resources
efficiently.
Ensuring a workload performs its
intended function correctly and
consistently when it’s expected to.
Avoiding unnecessary costs
Minimizing the environmental
impacts of running cloud
workloads
AWS Cloud Adoption Framework (CAF)
A Comprehensive Framework
for Cloud Transformation
Improved Organizational
Alignment
Enhanced Risk Management
Streamlined Cloud Operations
Optimized Cost Management
and Resource Allocation
01
02
03
04
05
C L O U D
A D O P T I O N
F R A M E W O R K
OPERATIONAL EXCELLENCE
SECURITY
PERFORMANCE EFFICIENCY
RELIABILITY
COST OPTIMIZATION
SUSTAINABILITY

LANDING ZONE - DESIGN DECISIONS
• Central Logging
• Central Security
• Central Deployment (IaC & App)
• Central Network Control
• Decoupled Business Accounts
• AWS Security Hub
• Amazon GuardDuty
• AWS Config
• AWS CloudWatch & CloudTrail
• AWS Transit Gateway
• AWS Network Firewall
• AWS WAF
• Amazon Route 53
• Elastic Load Balancer
• Standard and Regulated
• Preventative & Detective Controls
• Data Protection
ACCOUNT STRUCTURE
NATIVE SECURITY TOOLS
NATIVE NETWORK CONTROLS
COMPLIANCE
• Master Account
• AWS Organization
• Security Control Policies
• AWS SSO
• Cost Control and Billing
• Account Factory
• Customizable
• Any Scale
• Workload Accounts
• Account Baseline
• Security Baseline
• Networking Baseline
• DXC Managed Services
• Flexible Operational Model
CENTRAL CONTROL
DEPLOYMENT
CONSISTENCY
INTEGRATION
GOVERNANCE
STANDARDIZED
TENANCY
SECURITY &
COMPLIANCE
NETWORKING
MATURED
OPERATIONS
AUTOMATION
LANDING ZONE

• • •
ACCELERATE WITH MIGRATION PATHWAYS
Move to the cloud faster with proven migration patterns!
[Relocate & Rehost]
VENDOR
MIGRATION TOOLS
BLOCK LEVEL
COPY
REINSTALLATION
EXPORT
& IMPORT

• • •
OPTIMIZE WITH MODERNIZATION PATHWAYS
Once in the cloud, these pathways provide a proven and structured approach to modernization
[Replatform & Refactor]
MOVE TO
CONTAINERS
MOVE TO
MANAGED DATABASES
MOVE TO
MODERN ANALYTICS
MOVE TO
CLOUD NATIVE
MOVE TO
MODERN DEVOPS
MOVE TO
OPEN SOURCE
< SRC >
Unlock additional AWS MAP Funding through Modernization!

• • •
MIGRATION PROCESS, TESTING & PRODUCTION CUTOVER
The final countdown. The future starts now.

• • •
MIGRATION PROCESS, TESTING, CUTOVER
What are the Challenges?
• Testing in total isolation
• Data corruption
• Leaky transactions
• Business-level access for testing
• Application dependencies
• Speed to technical validation
• Production cutover risk
THE BUBBLE
MIGRATE WITH CONFIDENCE: Test, Validate & Cutover in The Bubble
The Bubble
• Segregated “bubble” for cutover testing
and business validation
• Application data isolation to eliminate
production contamination
• Flexibility to rebuild quickly
• IP Change Validation
• Pilot Migrations
• Practice Cutovers
• Lowers risk, increases confidence

• • •
QUESTIONS?

•
CLEANSLATE OVERVIEW OUR SUPERPOWERS
CleanSlate Technology Group is a leading AWS Premier Consulting Partner specializing in
building modern applications and products that move businesses forward.
We believe when you combine the power of technology with brilliant ideas, the sky is the
limit.
DATA & ANALYTICS CLOUD MODERNIZATION &
SAAS
CLOUD MIGRATION
GENERATIVE
AI
Gain the power of Generative AI to
automate workflows, generate
insights, and drive smarter business
decisions.
Utilize intelligent data processing, with
predictive analytics and real-time insights
to stay ahead of the competition.
Seamless migration strategies, enhanced
agility and expert guidance to build
scalable cloud environments and next-gen
apps.
Future-proof your business by
upgrading to a modern, scalable
infrastructure with our proven expertise.
• Legacy Migration and Modernization (VMware, DB, Applications)
• Legacy Application conversion to SaaS
• DevOps full automation and CI/CD
• Data Modernization with Analytics, Gen AI, Data Lakehouse
• Financial Services, Logistics, Manufacturing, Digital Native
SaaS DESIGN & BUILD
SaaS mindsets empower organizations
to design and build cloud-native apps
that unlock new ways to innovate.
MIGRATION & MODERNIZATION
We bring deep experience to your project,
help you access AWS MAP funding, and
guide you through a seamless migration
journey.
DevOps
Leverage our cloud automation expertise
to supercharge DevOps, drive continuous
improvement and gain faster releases.
OUR CREDENTIALS
CORE SERVICES
We have over 80 Certifications & over 100 Accreditations. Spanning AI/ML, Cloud Engineering, Architecture, Security and Data

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LEAD YOUR ORGANIZATIONAL MODERNIZATION
WITH CLEANSLATE TECHNOLOGY GROUP AND AWS.
• Modernize core infrastructure to support next-gen workloads
• Optimize cost and performance through AWS-native architectures
• Align IT with business strategy for accelerated digital outcomes
• De-risk migration with expert-led transformation planning
LET’S GET IN TOUCH
awssales@cleanslatetg.co
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