Our client wanted to improve system performance and streamline Continuous Integration and Continuous Deployment (CI/CD) processes for their existing application. In essence, the project endeavors to modernize the existing infrastructure, aligning it with contemporary architectural principles to bolster performance, agility, and cost-efficiency while mitigating operational risks.

To this end, they needed to modernize an existing legacy system by transforming the monolithic architecture into an event-driven one. Several factors drove the project.

• Introduce new services to support enterprise-wide initiatives like E-concessions (Marketplace).
• Integrate business and communication events to unlock valuable customer insights.
• Implement communication triggers based on factors like urgency and priority, allowing for prioritized delivery of critical communications, such as Multi-Factor Authentication (MFA) and customer verifications.

• Mitigate risks associated with maintaining a Tier 1 service on a monolithic architecture by transitioning to an event-driven architecture.
• Eliminate dependencies on legacy services, ensuring uninterrupted service provision even during legacy system failures.

• Accelerate response to business needs, swiftly enabling new communication channels like emails, texts, or push notifications within days instead of weeks.
• Decouple communication channels to enable independent activation without affecting other business units.
• Improve CI/CD processes and adherence to Engineering Standards, including the use of standardized pipelines and Confluent Cloud for efficient operations.
• Consolidate business logic in a centralized location for streamlined management.

• Reduce the infrastructure costs by migrating from EC2 instances to Kubernetes (K8s) infrastructure.
• Improve autoscaling capabilities to enhance efficiency and cost-effectiveness. 
• Boost productivity and reduce on-call hours for the engineering team to save operational expenses.

We transformed the infrastructure management approach from manual to automated and implemented the best practices for Infrastructure as Code (IaC). Additionally, we divided all business logic components into microservices, which allowed us to achieve a cost reduction of approximately 30% by utilizing Kubernetes pods instead of EC2 instances. Moreover, we made significant enhancements to the security of the service.