Enterprise AWS Infrastructure Migration

Complete infrastructure modernization and migration to AWS with enhanced security, scalability, and 99.99% availability SLA

Cloud Migration Financial Services 18 months

The Challenge

A leading financial services company with over 500 employees was operating on legacy on-premises infrastructure that was becoming increasingly costly to maintain and scale. Their existing setup included aging physical servers, limited disaster recovery capabilities, and security vulnerabilities that posed compliance risks in the highly regulated financial sector.

Legacy Infrastructure Issues:

Aging physical servers with high maintenance costs and frequent downtime
Limited scalability during peak trading hours and market volatility
Inadequate disaster recovery with 24-48 hour recovery times
Security vulnerabilities and compliance gaps for financial regulations
High operational overhead with 24/7 on-site IT staff requirements
Lack of automated backup and monitoring systems
Network bottlenecks affecting trading platform performance

Our Comprehensive AWS Migration Solution

Tech Premises designed and executed a complete infrastructure migration to AWS, implementing enterprise-grade security, scalability, and resilience while ensuring zero downtime during the transition.

Network Architecture Implementation:

Multi-AZ VPC Design: Implemented redundant Virtual Private Clouds across 3 Availability Zones
Hybrid Connectivity: Established AWS Direct Connect with VPN backup for secure on-premises integration
Network Segmentation: Created isolated subnets for web, application, and database tiers
Load Balancing: Deployed Application Load Balancers with SSL termination and health checks
CDN Integration: Implemented CloudFront for global content delivery and DDoS protection

Server Architecture Modernization:

EC2 Instance Optimization: Right-sized instances using C5, M5, and R5 families for different workloads
Auto Scaling Groups: Configured dynamic scaling based on CPU, memory, and custom metrics
Container Migration: Migrated microservices to Amazon ECS with Fargate for serverless containers
Database Migration: Moved to Amazon RDS with Multi-AZ deployment and read replicas
Storage Optimization: Implemented tiered storage using EBS, EFS, and S3 with lifecycle policies

AWS Services Implementation:

Added Services:

Amazon EC2 with Auto Scaling
Amazon RDS (PostgreSQL, MySQL)
Amazon S3 with Glacier for archival
Amazon CloudFront CDN
AWS Lambda for serverless functions
Amazon ElastiCache (Redis)
Amazon SQS and SNS for messaging
AWS Systems Manager for patch management

Replaced Legacy Systems:

Physical servers → EC2 instances
On-premises databases → Amazon RDS
Local storage → S3 and EBS
Hardware load balancers → ALB/NLB
Tape backups → S3 and Glacier
Manual monitoring → CloudWatch

Security Services Enhancement:

Identity & Access Management: Implemented AWS IAM with role-based access and MFA
Network Security: Deployed AWS WAF, Security Groups, and NACLs
Encryption: End-to-end encryption using AWS KMS for data at rest and in transit
Monitoring & Compliance: AWS Config, CloudTrail, and GuardDuty for continuous monitoring
Secrets Management: AWS Secrets Manager for database credentials and API keys
Certificate Management: AWS Certificate Manager for SSL/TLS certificates

Technical Implementation Details

Scalability Architecture:

Horizontal Scaling: Auto Scaling Groups with target tracking policies
Database Scaling: Read replicas and Aurora Serverless for variable workloads
Caching Strategy: Multi-layer caching with ElastiCache and CloudFront
Microservices: Containerized applications with ECS for independent scaling
Serverless Functions: Lambda functions for event-driven processing

Availability & Resiliency (99.99% SLA):

Multi-AZ Deployment: Resources distributed across 3 Availability Zones
Database High Availability: RDS Multi-AZ with automatic failover
Load Balancer Health Checks: Automatic traffic routing to healthy instances
Auto Recovery: EC2 auto recovery and EBS snapshot automation
Circuit Breakers: Application-level resilience patterns

Business Continuity & Disaster Recovery:

RTO Target: 15 minutes for critical systems
RPO Target: 5 minutes data loss maximum
Cross-Region Backup: Automated S3 cross-region replication
Database Backups: Point-in-time recovery with 35-day retention
DR Testing: Monthly disaster recovery drills and documentation
Runbook Automation: AWS Systems Manager for automated recovery procedures

Vulnerability Management:

Automated Patching: AWS Systems Manager Patch Manager
Vulnerability Scanning: Amazon Inspector for EC2 and container images
Security Assessments: Monthly penetration testing and vulnerability assessments
Compliance Monitoring: AWS Config rules for SOC 2 and PCI DSS compliance
Image Hardening: Custom AMIs with security baselines

Incident Response Framework:

24/7 Monitoring: CloudWatch alarms with SNS notifications
Automated Response: Lambda functions for immediate incident response
Escalation Procedures: PagerDuty integration with on-call rotations
Forensics Capability: CloudTrail logs and VPC Flow Logs retention
Communication Plan: Automated stakeholder notifications via SNS

Client Interactions & Consultation

Security Architecture Consultations:

Compliance Workshops: Guided client through SOC 2 Type II and PCI DSS requirements
Risk Assessment: Conducted comprehensive security risk analysis and mitigation strategies
Security Training: Provided AWS security best practices training for client's IT team
Audit Preparation: Assisted with regulatory audit preparation and documentation

Architecture Design Sessions:

Well-Architected Review: Conducted AWS Well-Architected Framework assessment
Cost Optimization: Regular architecture reviews for cost optimization opportunities
Performance Tuning: Ongoing performance analysis and optimization recommendations
Future Planning: Quarterly roadmap sessions for technology evolution

Results Achieved

The AWS migration delivered exceptional results across all key performance indicators:

99.99%

Availability SLA Achieved

65%

Reduction in Infrastructure Costs

15 min

Recovery Time Objective (RTO)

300%

Improvement in Scalability

90%

Reduction in Security Incidents

Zero

Downtime During Migration

Additional Benefits:

Achieved SOC 2 Type II and PCI DSS compliance
Reduced patch management time by 80% through automation
Improved application performance by 40% during peak loads
Eliminated need for 24/7 on-site IT staff
Enabled global expansion with multi-region capabilities

Client Testimonial

"Tech Premises delivered an exceptional AWS migration that exceeded all our expectations. Their deep expertise in financial services compliance and AWS architecture was evident throughout the project. We achieved 99.99% availability, reduced costs by 65%, and gained the scalability we needed for our growing business. The zero-downtime migration was particularly impressive, and their ongoing support has been invaluable."

- Robert Chen, CTO, Premier Financial Services

Project Details

Industry: Financial Services

Service: AWS Infrastructure Migration

Duration: 18 months

Team Size: 8 cloud architects & engineers

Servers Migrated: 150+ instances

Data Migrated: 50TB+

AWS Services Implemented

Amazon EC2 & Auto Scaling
Amazon RDS & Aurora
Amazon S3 & Glacier
AWS Lambda
Amazon CloudFront
AWS WAF & Shield
AWS KMS & Secrets Manager
Amazon CloudWatch
AWS Config & GuardDuty
AWS Systems Manager

Compliance Achieved

SOC 2 Type II
PCI DSS Level 1
ISO 27001
AWS Well-Architected