Eurowag: Optimizing AWS networking for payment solutions and connectivity

About the Company

Eurowag is a leading European transport payments company founded in the Czech Republic in 1995 and listed on the London Stock Exchange (FTSE 250). Operating in 23 countries and supporting over 300,000 active trucks, it offers a single platform for fuel payments, toll management, tax refunds, and fleet telematics. Its fuel card is accepted at more than 15,600 stations across Europe. As a publicly traded pan-European payments infrastructure provider, Eurowag operates mission-critical systems where availability, security, and scalability are essential.

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Key Challenges

The customer wanted a stable infrastructure delivered as a service.

The solution had to operate 24/7, with the highest availability during business days. While most payment transactions occurred during the day, late night and early morning transactions were also common.
The primary requirement was end-to-end infrastructure availability, ensuring that applications could process incoming transactions without interruption.
The infrastructure had to integrate seamlessly with the customer's other data centers and cloud providers.
Application updates and new container image deployments had to be fast and follow a clear approval process.
In the event of an issue, the monitoring system had to detect the problem and alert the Trustsoft support team and, when necessary, the customer.

The Solution and Architecture

Trustsoft designed an AWS infrastructure that supported both legacy and modern applications.

The environment was deployed through fully automated CI/CD pipelines, with separate pipelines for application container deployments and infrastructure as code (Terraform).
AWS Organizations and AWS Control Tower were used to manage separate Shared, Application, Audit, and Management accounts.
The networking architecture connected AWS with external data centers and cloud providers using AWS Site-to-Site VPNs, AWS Transit Gateway, and internal load balancing where required. AWS PrivateLink was used for workloads requiring higher reliability.
Load balancer target groups were continuously monitored to ensure external endpoints remained available.
Trustsoft monitored both internal and external endpoints, including proactive transaction monitoring, to reduce response times and minimize dependency on external partners for issue detection.

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Business Benefits

The project delivered measurable operational and financial benefits while providing the customer with a stable, scalable, and cost-efficient cloud platform.

Trustsoft performed a comprehensive Total Cost of Ownership (TCO) analysis before the migration, including right-sizing recommendations, cost comparisons, and AWS-based cost estimates to support informed decision making.
The migration reduced infrastructure costs, improved operational efficiency, and increased business agility through AWS services and open source technologies.
Cloud spending remained predictable throughout the project, with AWS costs consistently maintained within the agreed monthly budget despite growing platform usage.
Over several months of production operations, Trustsoft successfully resolved hundreds of critical monitoring alerts with minimal impact on the production environment.
The platform maintained high service availability. Even during a rare database performance incident, customer services remained operational.
Proactive infrastructure and transaction monitoring, combined with rapid incident response, helped minimize downtime and ensure business continuity.