Overview
A leading German automotive enterprise required a secure, scalable, and PCI DSS-compliant transaction-processing platform to support its financial services operations on AWS. The platform needed to process sensitive payment and cardholder data, integrate with external payment service providers, and meet strict regulatory requirements-while maintaining predictable performance as transaction volumes increased.
ITGix partnered with the customer to design and operate a PCI DSS-compliant, DynamoDB-centric architecture on AWS, enabling automated, auditable infrastructure management and enterprise-grade reliability for mission-critical financial workloads.
Customer Background
The customer’s financial services division provides payment processing services for internal merchant applications across multiple business units. Acting as a secure transaction proxy, the platform routes payment requests to external payment service providers while handling sensitive financial and cardholder data.
Given the critical nature of payment flows and regulatory exposure, the customer required a cloud-native AWS solution that combined strong data consistency, security by design, and operational scalability-without adding unnecessary operational overhead.
Business and Technical Challenges
The customer faced several challenges in modernizing its AWS-based transaction-processing platform:
- PCI DSS–compliant storage for financial and cardholder transaction data
- Strong data consistency and atomic operations to ensure financial integrity
- High scalability and predictable performance as transaction volumes grow
- Private, secure database access with no public internet exposure
- Strict environment isolation and granular access control across teams
- Fully automated, auditable infrastructure provisioning for compliance and governance
AWS Solution Designed by ITGix
ITGix designed a cloud-native, DynamoDB-first architecture built for enterprise financial services and high-volume payment processing. The solution meets strict security and compliance requirements while enabling seamless scalability on AWS.
Amazon DynamoDB serves as the fully managed, serverless data store for both configuration data and large-scale transaction histories, delivering predictable performance without operational overhead as transaction volumes grow.
To maintain financial integrity, ITGix implemented DynamoDB Transactions (TransactWriteItems), ensuring ACID-compliant operations with atomic balance updates and consistent transaction logging.
The data model was optimized around application access patterns using high-cardinality partition keys, time-based sort keys, and Global Secondary Indexes (GSIs). Time to Live (TTL) policies automate the removal of transient and compliance-sensitive data.
For resilience and security, Point-in-Time Recovery (PITR) provides reliable backup and restore capabilities, while DynamoDB VPC Endpoints keep all database traffic private within AWS.
The platform is fully automated using Terraform Infrastructure as Code and Azure DevOps CI/CD pipelines, with a multi-account AWS architecture enforcing environment isolation, access control, and safe infrastructure changes.
Results and Business Outcomes
By implementing a fully managed Amazon DynamoDB architecture, ITGix helped the customer achieve measurable improvements across security, scalability, and operational efficiency. The new platform supports reliable, real-time financial transaction processing while reducing operational complexity and manual intervention.
- Delivered a PCI DSS–compliant DynamoDB platform supporting live financial transaction processing
- Ensured strong data consistency and financial integrity across all payment flows, including digital wallet transactions
- Achieved high scalability with low operational overhead using a serverless database service
- Enabled secure, automated, and auditable infrastructure management across multiple AWS accounts
- Established a future-ready architecture with a clear optimization path using Amazon DynamoDB Accelerator (DAX)
As a result, the customer gained greater confidence in its payment infrastructure, improved platform resilience, and a scalable foundation capable of supporting continued growth and evolving regulatory requirements.
Conclusion
This engagement demonstrates how ITGix helps enterprises in regulated industries design and operate secure, compliant, and scalable AWS cloud-native platforms. By combining deep AWS expertise with infrastructure automation and best-practice data modeling, ITGix enabled the customer to confidently scale its financial services workloads while maintaining strict security and compliance standards. The resulting architecture provides a robust foundation for future innovation, performance optimization, and the seamless onboarding of new payment services as business demands to evolve.
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