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EURUS CASE STUDY

Serverless API Architecture for Multi-Cloud Security & Governance Platform for West Myra

Client Overview

West Myra is a digital solutions provider offering enterprise-grade capabilities across multi-cloud security compliance, governance, cost monitoring, and automation. Their platform supports organizations operating across AWS, Azure, and GCP helping them maintain compliance, manage cloud spending, and track resource governance from a centralized interface.

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Business Challenge

West Myra needed an application backend that could:
01
Handle a growing number of users and data
02
Deliver fast API responses with low latency
03
Maintain strong security and authentication
04
Scale automatically without manual infrastructure work
05
Integrate with multiple storage and database layers
06
Eliminate server management and reduce operational overhead
07
Integrate seamlessly with their existing AWS environment
08
Keep operational costs low
WestMyra wanted a backend architecture that would enable smooth product growth while minimizing maintenance overhead and ensuring strong performance.

Eurus Solution Approach

Eurus Technologies designed and built the application’s backend using a fully serverless architecture powered by AWS Serverless Framework. This provided a secure, scalable, and cost-efficient platform for API-driven communication between the frontend and the application’s data layers.

1. API Layer Using AWS Serverless Framework

Eurus built all core application APIs using AWS Serverless Framework supported by:

AWS Lambda

Implemented all backend logic as Lambda functions, each handling specific operations such as data retrieval, processing, and communication with the database and storage services. This provides automatic scaling, low latency, and a fully managed compute layer without server maintenance.

AWS API Gateway

All application APIs were exposed through AWS API Gateway, which routes requests to Lambda functions and enforces security policies. It provides request validation, throttling, and stage-based deployments, ensuring reliable and scalable API communication with the frontend.

AWS Cognito

User authentication and authorization were managed through Cognito. It provides user pools, secure token-based access, and integration with API Gateway, ensuring only authenticated and authorized users can access the platform’s APIs.

This architecture ensures automatic scaling, high availability, and minimal latency while reducing operational overhead.

2. Multi-Tier Data Architecture

To support the application’s data needs, Eurus implemented a combination of AWS-managed storage services:

Amazon RDS

Used Amazon RDS to store structured and transactional data required by the application. This provides reliable relational storage with automated backups, high availability, and efficient querying for modules that require strong data consistency.

Amazon DynamoDB

DynamoDB was implemented for fast, low-latency access to configuration data, lookups, and frequently accessed application metadata. Its scalability and performance make it ideal for read-heavy operations and real-time interactions within the backend.

Amazon S3

S3 was used to store documents, logs, and larger datasets generated by the platform. It offers durable, cost-effective storage and integrates seamlessly with Lambda for file processing, archival, and retrieval workflows.

Secure Communication

All Lambda functions were configured with AWS IAM roles and policies that grant least-privilege access to each data service. This ensures all interactions between the APIs and storage layers remain secure and fully controlled.

3. User Authentication & Security

Eurus integrated AWS Cognito to manage:

User sign-up and authentication

Token-based authorization

Role-based access control

All API endpoints were secured using IAM and Cognito authorizers to prevent unauthorized access.

4. Backend Logic & Application Services

We developed the backend business logic to support:

Users and roles

Application modules

Validation and processing workflows

Data retrieval and transformation for UI consumption

Notifications and system events

All services were built with scalability, modularity, and performance in mind.

Achievements & Impact

  • All services were built with scalability, modularity, and performance in mind.
  • Fast, secure, and reliable API layer for web application
  • Fully serverless backend that scales automatically with usage
  • Low operational cost due to pay-per-use serverless design
  • Strong security model using Cognito and AWS IAM frameworks
  • Optimized data access via RDS, DynamoDB, and S3
  • Future-ready architecture allowing new features to be added quickly
  • Zero server maintenance thanks to a fully serverless architecture that eliminates infrastructure management.
  • Smooth integration with existing AWS services enabling easy operations and future scalability.

Tools & Technologies Used

AWS Services Migrated

  • AWS Lambda (Python)
  • AWS API Gateway
  • AWS Cognito
  • AWS RDS PostgreSQL
  • AWS S3
  • AWS IAM & Security Best Practices
  • Infrastructure automation & AWS-native deployment workflows

Client Testimonial

“Eurus Technologies made a complex integration feel simple. Their engineers worked directly with our team, delivered the serverless API on schedule, and provided clear, practical documentation for handover. Performance and reliability improved noticeably, and their communication was consistent and solution-focused throughout the project.”

Conclusion

This project demonstrates Eurus Technologies’ ability to build scalable, practical, and secure serverless architectures that integrate seamlessly with real-world cloud platforms. By leveraging AWS-native services, the client now has a robust API foundation powering their multi-cloud compliance, governance, and cost-control capabilities, without any ongoing infrastructure management.