Multi-Tenant, Multi-Region Healthcare Platform on AWS

Client Overview

A health-tech company developed a digital healthcare platform designed to analyze blood test data collected via connected medical devices. The platform offered immediate diagnostic feedback using algorithm-based evaluations, eliminating the need for physician interpretation for certain conditions. With growing global adoption - particularly in the EU, United States, and parts of Africa - the platform required scalable, secure, and regulation-compliant infrastructure.

Challenge

The initial architecture relied heavily on AWS Cloud Functions and CloudFormation templates, with minimal ECS involvement. As the project grew in complexity, this setup became difficult to scale, maintain, and audit.

Key challenges included:

• Reorganizing infrastructure to support multi-tenant and multi-region deployments due to varying data protection laws (e.g., GDPR in the EU)
• Replacing CloudFormation with Terraform for better infrastructure-as-code management and team collaboration
• Supporting multiple environments (dev, test, UAT, prod) for safer deployments
• Ensuring the mobile apps for Android and iOS were CI/CD-enabled and multi-environment ready
• Enabling secure, isolated data handling across regions for patient privacy and compliance

Solution

Infrastructure Re-Architecture

Our team proposed and implemented a new infrastructure design:

Multi-Tenant & Multi-Region Setup

CI/CD and DevOps

Results

Resulting Infrastructure

The infrastructure was redesigned to be modular, secure, and compliant with healthcare regulations:

Technical Implementation

The platform was built using a modern tech stack designed for healthcare compliance and scalability:

Backend Services

• API Gateway: Managed API endpoints with custom authorizers
• ECS Fargate: Containerized microservices for core business logic
• Lambda: Serverless functions for lightweight operations
• AppSync: Real-time data synchronization

Data Layer

• Aurora PostgreSQL: Primary relational database with read replicas
• DynamoDB: High-performance NoSQL for time-series and high-velocity data
• ElastiCache (Redis): Caching layer for improved performance
• OpenSearch: Full-text search and analytics

Security & Compliance

• Cognito: Multi-tenant authentication and authorization
• KMS: Encryption at rest and in transit
• WAF & Shield: DDoS protection and web application firewall
• GuardDuty & Config: Continuous security monitoring

Technology Stack

Infrastructure Delivery

The infrastructure was designed for scalability, security, and global compliance with healthcare regulations: