Cloud Landing Zone with Control Tower and Disaster Recovery on AWS for a Leading Financial Institution

About Client
Prominent financial institution

Industry
Banking and Financial Services

Service
Cloud Infrastructure Optimization

Business Need

The financial institution realized the importance of updating its cloud infrastructure to remain competitive. The institution required:

  • Enhanced Landing Zone configuration
  • AWS Control Tower implementation
  • Terraform-based infrastructure automation
  • Disaster recovery in Hyderabad region
  • Standardized resource modules
  • Efficient multi-application management
  • Improved operational efficiency and scalability

Business Challenges

As the bank embarked on its cloud transformation journey, it faced several challenges common to large financial institutions. These included:

  • Lack of automation in the current Landing Zone
  • Absence of standardized multi-account management
  • No robust disaster recovery solution
  • Need for Policy as Code implementation
  • Complex application deployment across environments
  • Ensuring compliance across accounts and regions
  • Balancing centralized control with team flexibility
  • Managing transition without operational disruption

Business Solution

A custom solution was developed using AWS Control Tower and Terraform automation, including:

  • Implemented AWS Control Tower for multi-account governance
  • Developed Terraform modules for Landing Zone resources
  • Created a structured AWS Organization with separate OUs
  • Replicated architecture in Hyderabad for disaster recovery
  • Implemented granular policies and guardrails
  • Established separate accounts for production applications
  • Set up centralized logging and monitoring
  • Integrated with Azure DevOps for CI/CD
  • Utilized Azure Blob Storage for Terraform state management

Tech Stack

Implementing this ambitious project required an innovative technology stack. By combining robust AWS services with industry-leading DevOps tools, the solution provided a strong foundation for the bank’s cloud infrastructure. The stack includes:

  • AWS Control Tower
  • Terraform (Open Source)
  • AWS services: VPC, IAM, CloudTrail, CloudWatch, Organizations, Transit Gateway
  • Azure DevOps
  • Azure Blob Storage
  • AWS Config and Security Hub

Business Challenges

The client faced challenges due to the complex nature of its microservices-based application architecture, which required high levels of real-time data processing and low latency. Specific issues included:

  • Managing middleware, API, and real-time data streaming efficiently across isolated environments.
  • Achieving robust automation for Kubernetes deployments and minimizing manual configurations.
  • Ensuring the system’s resilience, scalability, and efficient resource management under high user demand.

Project Differentiator

What set this project apart was the innovative approach to cloud infrastructure management. Combining AWS Control Tower’s managed services with custom Terraform automation offered unparalleled flexibility and control in a multi-region setup.

  • Hybrid approach combining Control Tower with custom Terraform automation
  • Comprehensive multi-region setup
  • Infrastructure-as-Code principles
  • Phased implementation approach
  • Cross-platform DevOps capabilities
  • Custom-designed organizational structure
  • Multi-layered security and compliance controls

Business Impact

Implementing this ambitious project required an innovative technology stack. By combining robust AWS services with industry-leading DevOps tools, the solution provided a strong foundation for the bank’s cloud infrastructure. The stack includes:

  • Enhanced security posture
  • Improved operational efficiency
  • Increased scalability and flexibility
  • Robust disaster recovery capabilities
  • Streamlined application deployment
  • Better cost management
  • Improved governance and visibility
  • Enhanced innovation capabilities

 

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