Step-by-Step guide for AWS Migration from On-Premises to the Cloud

9 min read

aerial view photography of barefoot
aerial view photography of barefoot

AWS Migration Services

Seamless Cloud Transitions with Zero Surprises

Transform your business with enterprise-grade AWS migration services that minimize disruption and maximize efficiency. Our proven methodology has helped organizations of all sizes successfully transition to the cloud while reducing costs, improving performance, and accelerating innovation.

Why Choose Our AWS Migration Services?

Proven Track Record

Our certified AWS migration specialists have successfully migrated thousands of workloads across diverse industries including healthcare, finance, retail, manufacturing, and technology. We leverage AWS best practices and our proprietary migration frameworks to ensure your transition is smooth, secure, and successful.

Zero-Surprise Guarantee

Through comprehensive assessment and meticulous planning, we identify and mitigate risks before they become issues. Our wave-based migration approach ensures controlled, predictable outcomes with clear milestones and transparent communication throughout the process.

Cost Optimization from Day One

We don't just move your infrastructure—we optimize it. Our migration includes rightsizing recommendations, reserved capacity planning, and architectural improvements that typically deliver 30-50% cost savings compared to on-premises infrastructure.

Business Continuity Assured

Your business never stops, and neither should your migration. We employ advanced techniques, including blue-green deployments, real-time data replication, and comprehensive rollback procedures, to ensure your operations continue uninterrupted.

Our Comprehensive Migration Methodology

Phase 1: Assessment & Discovery

Comprehensive Infrastructure Analysis

Our migration journey begins with a thorough understanding of your current environment. We utilize advanced discovery tools and methodologies to create a complete inventory of your IT landscape.

What We Analyze:

  • Application Portfolio: All applications, their interdependencies, and business criticality

  • Infrastructure Inventory: Servers, storage systems, databases, networking components

  • Performance Metrics: CPU utilization, memory consumption, storage I/O, network traffic patterns

  • Licensing: Current software licenses and their cloud compatibility

  • Compliance Requirements: Regulatory obligations (HIPAA, PCI DSS, SOC 2, GDPR, etc.)

  • Business Requirements: Performance expectations, uptime requirements, disaster recovery needs

Application Discovery Process:

We employ multiple discovery methods to ensure complete visibility:

  1. Automated Discovery Tools: AWS Application Discovery Service, CloudEndure Migration Assessment, and third-party discovery tools scan your environment

  2. Agent-Based Discovery: Lightweight agents collect detailed performance data over 1-2 weeks

  3. Agentless Discovery: Network-based discovery for systems where agents cannot be installed

  4. Manual Documentation Review: Analysis of existing documentation, architecture diagrams, and runbooks

  5. Stakeholder Interviews: Sessions with application owners, developers, and operations teams

Dependency Mapping:

Understanding application dependencies is critical for successful migration. We map:

  • Application-to-application communication patterns

  • Database connections and data flows

  • External API integrations

  • Authentication and authorization dependencies

  • Shared storage and file system relationships

  • Network dependencies and firewall rules

Total Cost of Ownership (TCO) Analysis:

We provide detailed financial modeling comparing your current costs to projected AWS costs:

  • Current State Costs: Hardware, software licenses, maintenance, facilities, power, cooling, staff

  • AWS Cloud Costs: Compute, storage, data transfer, managed services

  • Migration Costs: Professional services, data transfer, temporary duplicate environments

  • 3-Year and 5-Year Projections: Including growth assumptions and optimization opportunities

  • ROI Timeline: When you'll break even and start realizing savings

Our TCO analysis typically shows 35-45% cost reduction over three years, with additional soft benefits like increased agility and reduced time-to-market for new features.

Migration Readiness Assessment:

We evaluate your organization's readiness across six dimensions:

  1. Business: Executive sponsorship, change management, business case

  2. People: Skills, training needs, organizational structure

  3. Process: ITSM processes, DevOps maturity, automation capabilities

  4. Platform: Application architecture, technical debt, cloud readiness

  5. Operations: Monitoring, incident management, support processes

  6. Security: Security posture, compliance requirements, risk management

Deliverables:

  • Detailed infrastructure inventory and application catalog

  • Comprehensive dependency maps and application groupings

  • TCO analysis with 3-year cost projections

  • Migration readiness assessment report

  • Prioritized migration wave plan

  • Risk register and mitigation strategies

  • Executive summary and business case

Phase 2: Migration Strategy & Planning

The 7 Rs of Migration

Based on our assessment, we recommend the optimal migration strategy for each application:

1. Rehost (Lift-and-Shift)

  • What: Move applications to AWS with minimal changes

  • Best For: Applications that need quick migration, legacy systems with stable performance

  • Timeline: Fastest option (days to weeks per application)

  • Benefit: Quick wins, immediate infrastructure cost savings

  • Tools: AWS Application Migration Service, CloudEndure, VM Import/Export

2. Replatform (Lift-Tinker-and-Shift)

  • What: Make minimal cloud optimizations without changing core architecture

  • Best For: Applications that can benefit from managed services (e.g., move database to RDS)

  • Timeline: Moderate (weeks to months)

  • Benefit: Performance improvements and reduced operational overhead

  • Example: Move from self-managed database to Amazon RDS or Aurora

3. Repurchase (Drop-and-Shop)

  • What: Switch to a different product, typically SaaS

  • Best For: Legacy applications with modern SaaS alternatives

  • Timeline: Varies based on data migration and integration

  • Benefit: Latest features, reduced maintenance, automatic updates

  • Example: Move from on-premises email server to Microsoft 365 or Google Workspace

4. Refactor/Re-architect

  • What: Redesign applications to be cloud-native

  • Best For: Applications requiring significant performance improvements or new capabilities

  • Timeline: Longest option (months)

  • Benefit: Maximum cloud benefits including elasticity, scalability, and modern features

  • Example: Convert monolithic application to microservices using containers and serverless

5. Relocate

  • What: Move servers between AWS accounts or regions

  • Best For: Already-cloud infrastructure needing reorganization

  • Timeline: Quick (hours to days)

  • Benefit: Improved organization and governance

6. Retain (Revisit)

  • What: Keep applications in current environment for now

  • Best For: Recently upgraded systems, applications not ready for migration

  • Timeline: Not applicable

  • Benefit: Focus resources on higher-priority migrations

7. Retire

  • What: Decommission applications no longer needed

  • Best For: Redundant, unused, or superseded applications

  • Timeline: Decommission process

  • Benefit: Reduced migration scope and ongoing operational costs

Wave-Based Migration Planning

We organize your migration into logical waves that minimize risk and maximize learning:

Wave 0: Pilot/Proof of Concept

  • Purpose: Validate approach and build confidence

  • Applications: 1-3 low-risk, non-critical applications

  • Duration: 2-4 weeks

  • Outcome: Proven processes, trained team, lessons learned

Wave 1: Quick Wins

  • Purpose: Demonstrate value and build momentum

  • Applications: 5-10 low-complexity, independent applications

  • Duration: 4-8 weeks

  • Outcome: Early cost savings, organizational confidence

Wave 2+: Scaled Migration

  • Purpose: Migrate bulk of portfolio

  • Applications: Grouped by dependencies and business unit

  • Duration: 3-9 months depending on portfolio size

  • Outcome: Majority of infrastructure migrated

Final Wave: Complex Systems

  • Purpose: Migrate most critical and complex applications

  • Applications: Core business systems, highly interdependent applications

  • Duration: 2-6 months

  • Outcome: Complete migration

Landing Zone Design

Before migrating applications, we establish your AWS foundation:

Multi-Account Strategy:

  • Management account for billing and organization policies

  • Security account for centralized security services

  • Shared services account for common infrastructure

  • Separate accounts for development, staging, and production

  • Individual accounts for business units or projects as needed

Network Architecture:

  • Virtual Private Cloud (VPC) design with proper subnet segmentation

  • Direct Connect or VPN connectivity to on-premises systems

  • Transit Gateway for multi-VPC and hybrid connectivity

  • Route 53 for DNS management

  • CloudFront for content delivery

  • Security groups and network ACLs for defense in depth

Security & Compliance Framework:

  • Identity and Access Management (IAM) with least privilege

  • AWS Organizations with Service Control Policies (SCPs)

  • AWS Config for compliance monitoring

  • CloudTrail for audit logging

  • GuardDuty for threat detection

  • Security Hub for centralized security findings

  • Encryption at rest and in transit

  • Key Management Service (KMS) for encryption key management

Operational Foundation:

  • CloudWatch for monitoring and alerting

  • Systems Manager for patch management and automation

  • AWS Backup for centralized backup management

  • CloudFormation or Terraform for infrastructure as code

  • CodePipeline for CI/CD

  • Cost allocation tags and budgets

Guardrails Implementation:

Guardrails are automated governance policies that ensure compliance and security:

Preventive Guardrails: Block actions that violate policies

  • Prevent public S3 bucket creation

  • Require encryption for all storage

  • Restrict resources to approved regions

  • Enforce MFA for privileged accounts

  • Block unauthorized instance types

Detective Guardrails: Identify non-compliant resources

  • Detect unencrypted databases

  • Identify overly permissive security groups

  • Flag resources without proper tagging

  • Monitor unusual access patterns

  • Track configuration changes

Deliverables:

  • Detailed migration plan with timelines and dependencies

  • Wave plan with application groupings

  • Landing zone architecture documentation

  • Network diagrams and security documentation

  • Runbooks and standard operating procedures

  • Risk mitigation plans

  • Communication and change management plan

Phase 3: Migration Execution

Pre-Migration Preparation

Before migrating each wave, we ensure readiness:

Testing Environment Setup:

  • Create pilot environment in AWS

  • Configure monitoring and logging

  • Test network connectivity

  • Validate backup and recovery procedures

  • Conduct security verification

Data Migration Planning:

  • Calculate data transfer times based on volume and bandwidth

  • Select optimal data transfer method (internet, Direct Connect, AWS Snowball)

  • Plan for initial bulk transfer and ongoing delta synchronization

  • Schedule data cutover windows

  • Prepare data validation procedures

Application Migration Process:

For each application in the migration wave:

1. Pre-Migration Testing (Week 1-2)

  • Deploy application infrastructure using infrastructure as code

  • Configure networking, security groups, and access controls

  • Test application deployment procedures

  • Validate monitoring and alerting

  • Conduct performance baseline testing

2. Initial Data Replication (Week 2-3)

  • Begin initial data transfer to AWS

  • Configure continuous replication for databases

  • Validate data integrity and completeness

  • Test application functionality with replicated data

  • Measure replication lag and optimize as needed

3. Pre-Cutover Validation (Week 3-4)

  • Complete full application testing in AWS environment

  • Conduct user acceptance testing (UAT)

  • Perform load and performance testing

  • Validate disaster recovery procedures

  • Obtain stakeholder signoff for cutover

4. Cutover Execution (Cutover Window)

  • Execute go/no-go decision meeting

  • Stop application write operations

  • Perform final data synchronization

  • Switch DNS or load balancer to AWS environment

  • Validate application functionality

  • Monitor for issues

  • Communicate cutover completion

5. Post-Migration Stabilization (Week 1-2)

  • 24/7 monitoring and support

  • Rapid issue resolution

  • Performance tuning and optimization

  • User support and issue tracking

  • Conduct post-mortem and lessons learned

Migration Techniques by Workload Type:

Database Migration:

  • AWS Database Migration Service (DMS): Continuous replication with minimal downtime

  • Native Replication: MySQL replication, Oracle Data Guard, SQL Server Always On

  • Backup and Restore: For smaller databases or extended maintenance windows

  • AWS Schema Conversion Tool: For heterogeneous migrations (e.g., Oracle to Aurora)

Virtual Machine Migration:

  • AWS Application Migration Service: Continuous replication for VMware, Hyper-V, physical servers

  • VM Import/Export: For compatible virtual machine formats

  • Hybrid Approach: Combination of rehosting and refactoring

Storage Migration:

  • AWS DataSync: Automated data transfer for file systems

  • AWS Transfer Family: SFTP, FTPS, FTP for third-party transfers

  • S3 Transfer Acceleration: Fast internet-based transfers

  • AWS Snowball/Snowmobile: For petabyte-scale data transfers

Container Migration:

  • Amazon ECS/EKS: For containerized applications

  • AWS App2Container: Convert existing applications to containers

  • Docker image migration: Transfer container images to Amazon ECR

Zero-Downtime Migration Strategies:

Blue-Green Deployment:

  • Maintain parallel environments (blue = current, green = new)

  • Route traffic to new environment after validation

  • Keep old environment as instant rollback option

  • Decommission old environment after stabilization

Database Synchronization:

  • Establish bi-directional replication

  • Gradually shift read traffic to AWS

  • Switch write traffic during low-usage window

  • Monitor for replication lag and data consistency

Phased Traffic Migration:

  • Use weighted routing or load balancer rules

  • Start with 10% traffic to AWS environment

  • Gradually increase to 50%, then 100%

  • Monitor performance and errors at each stage

  • Instant rollback capability at each phase

Rollback Procedures:

Every migration includes documented rollback plans:

  • Pre-cutover snapshot of AWS environment

  • Maintained on-premises infrastructure until stabilization

  • Documented rollback procedures with time estimates

  • Clear rollback decision criteria

  • Communication plan for rollback scenario

Deliverables:

  • Migrated applications running in AWS

  • Performance validation reports

  • Post-migration optimization recommendations

  • Updated documentation and runbooks

  • Knowledge transfer to operations team

  • Lessons learned document

  • Decommissioning plan for on-premises infrastructure

Phase 4: Post-Migration Optimization

Performance Tuning

After migration, we optimize your AWS environment for peak performance:

Compute Optimization:

  • Right-size instances based on actual utilization

  • Implement auto-scaling for variable workloads

  • Consider Spot Instances for fault-tolerant workloads

  • Evaluate containerization for better resource utilization

  • Implement load balancing for high availability

Storage Optimization:

  • Select appropriate storage tiers (S3 Standard, IA, Glacier)

  • Implement lifecycle policies for automated tiering

  • Optimize database storage (GP3, Provisioned IOPS, Aurora I/O-Optimized)

  • Enable compression and deduplication where applicable

Database Optimization:

  • Query performance tuning

  • Index optimization

  • Read replica implementation for read-heavy workloads

  • Caching layer implementation (ElastiCache)

  • Database parameter tuning

Network Optimization:

  • Optimize data transfer patterns

  • Implement CloudFront for content delivery

  • Configure VPC endpoints for AWS service access

  • Review and optimize security group rules

  • Implement network monitoring and optimization

Cost Optimization

We continuously identify cost-saving opportunities:

Immediate Actions:

  • Terminate unused resources

  • Stop non-production resources during off-hours

  • Delete old snapshots and unattached volumes

  • Remove unused Elastic IPs

Short-Term Optimization (1-3 months):

  • Right-size over-provisioned instances

  • Convert to Reserved Instances or Savings Plans

  • Implement auto-scaling

  • Optimize storage tiers

  • Review and optimize data transfer costs

Ongoing Optimization:

  • Monthly cost reviews and recommendations

  • Quarterly architecture reviews

  • Annual reservation optimization

  • Continuous monitoring for new cost-saving opportunities

Expected Cost Savings:

  • Immediate: 15-25% through resource cleanup

  • 3-6 months: Additional 15-20% through right-sizing and reservations

  • 12 months: Total 35-50% compared to initial AWS spend

Operational Excellence

We help establish cloud operations best practices:

Monitoring & Alerting:

  • Comprehensive CloudWatch dashboards

  • Proactive alerting for issues

  • Application performance monitoring

  • Log aggregation and analysis

  • Automated incident response

Automation:

  • Infrastructure as code for all resources

  • Automated backup and recovery

  • Auto-remediation of common issues

  • Patch management automation

  • Cost optimization automation

Documentation & Training:

  • Updated architecture diagrams

  • Operational runbooks

  • Disaster recovery procedures

  • Team training on AWS services

  • Best practices documentation

Security Posture Enhancement:

  • Security audit and remediation

  • Implement AWS Security Hub recommendations

  • Conduct penetration testing

  • Implement automated compliance checking

  • Security awareness training

Continuous Improvement:

  • Regular AWS Well-Architected Framework reviews

  • Adoption of new AWS services and features

  • Performance optimization initiatives

  • Cost optimization programs

  • Innovation workshops

Migration Services Portfolio

Express Migration

For Small to Mid-Sized Organizations

Ideal For:

  • 10-50 servers

  • Simple application architectures

  • Standard databases and web applications

  • Limited interdependencies

Timeline: 4-8 weeks

Includes:

  • Automated discovery and assessment

  • Standard landing zone setup

  • Lift-and-shift migration

  • Basic optimization

  • 30-day post-migration support

Starting at: Contact for pricing

Enterprise Migration

For Large Organizations

Ideal For:

  • 50-500+ servers

  • Complex application ecosystems

  • Multiple data centers

  • Hybrid cloud requirements

  • Strict compliance requirements

Timeline: 3-12 months

Includes:

  • Comprehensive assessment with TCO analysis

  • Custom landing zone design

  • Multi-wave migration execution

  • Advanced optimization and modernization

  • 90-day post-migration support

  • Dedicated migration team

Pricing: Custom based on scope

Application Modernization

Beyond Lift-and-Shift

Transform applications to leverage cloud-native capabilities:

Containerization:

  • Convert applications to containers

  • Deploy on Amazon ECS or EKS

  • Implement microservices architecture

  • CI/CD pipeline setup

Serverless Transformation:

  • Refactor to AWS Lambda

  • Event-driven architecture design

  • API Gateway integration

  • DynamoDB and managed services

Database Modernization:

  • Migrate to Amazon Aurora

  • NoSQL database migration

  • Data lake implementation

  • Analytics and BI modernization

Pricing: Custom based on application complexity

Managed Migration Service

Fully Managed, Turnkey Solution

We Handle Everything:

  • Complete project management

  • All technical execution

  • Vendor coordination

  • License optimization

  • Change management

  • User training

  • 24/7 support during migration

Ideal For:

  • Organizations with limited IT resources

  • Companies requiring minimal internal involvement

  • Time-sensitive migrations

  • Regulated industries requiring expert compliance handling

Pricing: Fixed-price packages available

Why Wave-Based Migration Works

Risk Mitigation

  • Learn from each wave before proceeding

  • Identify and resolve issues with low-risk applications first

  • Build team expertise progressively

  • Minimize impact of any single failure

Business Continuity

  • Never migrate everything at once

  • Maintain operational stability

  • Preserve fallback options

  • Controlled scope and predictable outcomes

Resource Management

  • Spread costs over time

  • Allocate IT staff effectively

  • Avoid overwhelming your team

  • Match migration pace to organizational capacity

Continuous Improvement

  • Apply lessons learned to subsequent waves

  • Refine processes and automation

  • Improve efficiency with each iteration

  • Optimize costs progressively

Success Metrics

We measure success across multiple dimensions:

Technical Metrics:

  • Migration completion rate: 98%+ success rate

  • Downtime: Average <2 hours per application

  • Performance: Maintain or improve application performance

  • Availability: 99.9%+ uptime post-migration

Business Metrics:

  • Cost reduction: 30-50% infrastructure cost savings

  • Time to migrate: Predictable timelines with ±10% variance

  • User satisfaction: Minimal disruption to end users

  • ROI: Positive return within 18-24 months

Operational Metrics:

  • Incident reduction: 40-60% fewer infrastructure incidents

  • Deployment speed: 5-10x faster application deployments

  • Recovery time: 80% faster disaster recovery

  • Security posture: Improved compliance and security

Industries We Serve

Healthcare

  • HIPAA-compliant migrations

  • Electronic health record (EHR) systems

  • Medical imaging and PACS

  • Telemedicine platforms

  • Healthcare analytics

Financial Services

  • PCI DSS compliance

  • Core banking systems

  • Payment processing

  • Trading platforms

  • Risk management systems

Retail & E-Commerce

  • E-commerce platforms

  • Point-of-sale systems

  • Inventory management

  • Customer data platforms

  • Omnichannel solutions

Manufacturing

  • ERP systems

  • Supply chain management

  • IoT and edge computing

  • Manufacturing execution systems

  • Quality management systems

Education

  • Learning management systems

  • Student information systems

  • Research computing

  • Campus infrastructure

  • Collaboration tools

Technology & SaaS

  • Product infrastructure

  • Development environments

  • CI/CD pipelines

  • Multi-tenant architectures

  • Global deployment

AWS Services We Leverage

Compute

  • Amazon EC2: Virtual servers

  • AWS Lambda: Serverless computing

  • Amazon ECS/EKS: Container orchestration

  • AWS Fargate: Serverless containers

  • AWS Batch: Batch processing

Storage

  • Amazon S3: Object storage

  • Amazon EBS: Block storage

  • Amazon EFS: File storage

  • Amazon FSx: Managed file systems

  • AWS Storage Gateway: Hybrid storage

Database

  • Amazon RDS: Relational databases

  • Amazon Aurora: High-performance database

  • Amazon DynamoDB: NoSQL database

  • Amazon DocumentDB: MongoDB-compatible

  • Amazon Redshift: Data warehouse

Migration Tools

  • AWS Application Migration Service: Server migration

  • AWS Database Migration Service: Database migration

  • AWS DataSync: Data transfer

  • AWS Transfer Family: File transfers

  • AWS Snow Family: Large-scale data transfer

Security

  • AWS IAM: Identity and access management

  • AWS KMS: Key management

  • AWS Shield: DDoS protection

  • AWS WAF: Web application firewall

  • Amazon GuardDuty: Threat detection

Management

  • AWS CloudFormation: Infrastructure as code

  • AWS Systems Manager: Operations management

  • AWS CloudWatch: Monitoring and logging

  • AWS CloudTrail: Audit logging

  • AWS Config: Configuration management

Get Started Today

Step 1: Free Consultation

Schedule a 60-minute consultation with our AWS migration experts to discuss your goals and challenges.

Step 2: Discovery Assessment

We'll conduct a preliminary assessment of your environment (usually 1-2 weeks) to understand scope and complexity.

Step 3: Receive Your Migration Plan

Get a detailed migration roadmap including timeline, costs, and expected outcomes.

Step 4: Execute Migration

Our expert team handles the migration while you maintain focus on your business.

Step 5: Optimize & Grow

Continuous optimization ensures you maximize the value of your AWS investment.

Contact Us

Ready to start your AWS migration journey?

  • Phone: 313-310-9093

  • Email: hr@awssol.com

Office Hours: Monday - Friday: 8:00 AM - 6:00 PM MST 24/7 Emergency Support for Active Migrations

AWSSOL LLC - Your trusted partner for seamless AWS cloud migration. Let's transform your infrastructure together.