Healthcare Platform Security & AWS Migration
Migrating from Shared Hosting to AWS, Dockerization, CI/CD, and Advanced Security
Overview
This case study documents a comprehensive modernization and security hardening initiative for a healthcare platform handling sensitive patient data and Protected Health Information (PHI). The platform required robust security measures to ensure compliance with healthcare regulations while maintaining reliability and scalability.
The legacy system was deployed on shared hosting with a MySQL database, presenting significant security vulnerabilities and lacking proper isolation. The tech stack consisted of a React frontend and Laravel backend, both running on shared infrastructure with no encryption, no role-based access control, and no security monitoring capabilities.
The goal was to migrate the entire system to AWS, implement enterprise-grade security measures, introduce CI/CD pipelines, establish comprehensive monitoring and alerting, and ensure all data handling met compliance requirements. The project was completed in 2 months by a cross-functional Tecxo.io team of 5 members across backend, frontend, DevOps, and QA.
Legacy Stack
- React frontend on shared hosting
- Laravel backend on shared hosting
- MySQL database on shared hosting
- No database isolation (DB accessible externally)
- Plaintext secrets in .env files
- Manual deployments via FTP
- No monitoring, logging, or alerting
- No automated backups
- No WAF or security scanning
Platform Modules
The Challenges
Critical issues that required systematic solutions.
Shared Hosting Vulnerabilities
Application running on shared hosting with no compute or network control. No isolation from other tenants, creating significant security risks for patient data.
Exposed Database
MySQL database hosted on shared infrastructure with external accessibility. No network isolation, encryption at rest, or connection security.
No Encryption or Key Management
Secrets and API keys stored in plaintext .env files. No encryption for sensitive data, no secure key management.
No Access Control
Application lacked Role-Based Access Control (RBAC). No rate limiting or brute-force protection on authentication endpoints.
Global Attack Surface
Application accessible globally with no geo-restrictions or IP-based access controls. Admin areas exposed without additional security layers.
Manual Deployments
Deployments performed manually via FTP, prone to human error. No CI/CD pipeline, no automated testing, and no rollback capabilities.
Zero Visibility
No monitoring, logging, or alerting systems. Unable to detect security incidents or system failures in real-time.
No Backup Strategy
No automated backups for database or application code. Complete data loss risk with no disaster recovery plan.
Engineering Leadership & Cloud Architecture
The Tecxo.io team defined the complete AWS migration roadmap, security architecture, and CI/CD strategy — leading backend, frontend, DevOps, and QA through the 2-month transformation while maintaining production availability.
The Solutions
A comprehensive approach addressing architecture, technology, and operational concerns.
AWS Migration (Compute + Database)
Migrated the entire infrastructure from shared hosting to AWS, establishing a secure, isolated, and scalable environment for healthcare data.
- Migrated Laravel backend to AWS EC2 with Docker containerization
- Migrated MySQL to Amazon RDS with encryption at rest
- Implemented VPC with private subnets for database isolation
- Configured security groups allowing DB access only from application EC2
- Enabled Multi-AZ deployment for high availability
Frontend Hosting on AWS Amplify
Deployed the React frontend to AWS Amplify for managed hosting with built-in CI/CD and security features.
- Migrated React frontend to AWS Amplify with automatic builds on git push
- Configured custom domain with SSL/TLS certificates
- Implemented branch-based deployments for staging environments
- Configured proper CORS and security headers
IAM Role-Based Access for Secrets
Eliminated plaintext credentials by implementing IAM role-based access control for all AWS services and sensitive configurations.
- Removed all plaintext secrets from .env files and codebase
- Implemented IAM roles for EC2 with least-privilege policies
- Configured AWS Secrets Manager for database credentials and API keys
- Implemented automatic secret rotation for enhanced security
CI/CD Pipeline Implementation
Introduced automated CI/CD pipelines using GitHub Actions for consistent, secure, and reliable deployments.
- GitHub Actions workflows for Laravel backend (Docker build, test, deploy)
- Automated zero-downtime rolling updates to EC2
- React frontend auto-deploys to Amplify on main branch push
- Automated unit tests, integration tests, and security scans
Comprehensive Security Hardening
Implemented multi-layered security architecture following OWASP best practices and healthcare compliance requirements.
- Deployed AWS WAF with managed rule sets
- Enabled Amazon GuardDuty for continuous threat detection
- Configured Amazon Inspector for automated vulnerability scanning
- Enforced RBAC throughout the application
- Encrypted all data at rest and in transit
Monitoring, Logging & Daily Backups
Established comprehensive observability with CloudWatch and automated daily backups for database and application code.
- CloudWatch metrics, dashboards, and SNS alerting
- RDS automated snapshots with 30-day retention
- Daily codebase backups to S3 with KMS encryption
- Regular restore tests to verify backup integrity
AWS Architecture
Strategic selection of AWS services optimized for performance, cost efficiency, and operational excellence.
EC2 + Docker
Containerized application hosting
Dockerized Laravel on EC2 provides full runtime control with consistent deployments and horizontal scaling.
Amazon RDS (MySQL)
Managed relational database
Managed MySQL with automated backups, encryption at rest, Multi-AZ failover, and VPC isolation.
AWS Amplify
Frontend hosting with CI/CD
Managed React hosting with automatic builds, custom domains, and SSL out of the box.
AWS WAF
Web application firewall
Protects against SQL injection, XSS, and DDoS with managed and custom rule sets.
Amazon GuardDuty
Threat detection
Continuous monitoring for malicious activity across VPC flow logs and CloudTrail events.
CloudWatch
Monitoring and observability
Centralized metrics, logs, alarms, and anomaly detection for infrastructure health.
Infrastructure Investment
Security-First Investment (~$500/mo total)
| Category | Before | After |
|---|---|---|
| Compute (EC2 + Docker) | $0 (shared) | $180/mo |
| Database (RDS MySQL) | $0 (shared) | $120/mo |
| Security (WAF, GuardDuty) | $0 | $100/mo |
| Monitoring & Backups | $0 | $80/mo |
Results & Impact
Security Posture
Multi-layered security with WAF, GuardDuty, Inspector, RBAC, and encryption throughout
Availability
High availability with Multi-AZ RDS, Auto Scaling, and load balancing
Backup Coverage
Daily automated backups for database and code with 30-day retention
Deployment Time
Automated CI/CD pipelines with zero-downtime deployments
Monthly Cost
Infrastructure stabilized around $500/month with dramatically improved security
Key Takeaways
- Security cannot be an afterthought for healthcare platforms — it must be architected from the foundation
- IAM role-based access eliminates the risk of credential leakage from plaintext configuration files
- Multi-layered security (WAF, GuardDuty, Inspector) provides defense in depth against various attack vectors
- Automated CI/CD pipelines reduce human error and ensure consistent, secure deployments
- Regular backup testing is essential — untested backups are not backups