Managing a High-Scale, Complex CDN Migration Under a Tight Deadline
The client operates a large-scale global web presence, handling hundreds of services and billions of monthly requests. To maintain consistent, fast, and secure user experiences across regions, the company needed to modernize its CDN infrastructure without compromising service availability or security.
Key challenges:
- Tight Deadline: The entire CDN architecture needed to be migrated within 30 days to minimize business disruption.
- Massive Traffic: The infrastructure served 200+ services handling 9 billion monthly requests, leaving no room for error during cutover.
- Complex Legacy Logic: Existing CDN rules were highly customized and costly to convert, requiring precise translation into CloudFront-compatible configurations.
- Security Requirements: The new architecture needed to align with enterprise-grade cybersecurity standards and integrate seamlessly with existing security policies.
End-to-End CDN Migration with Security Integration and Automated Testing
The project spanned cloud migration, security architecture design, and managed services.
- Migration & Deployment
- Fast & Modular Deployment: Terraform and YAML-based modular libraries were used to efficiently convert complex legacy CDN configurations into CloudFront-compatible formats, enabling rapid and repeatable deployment.
- Custom Routing Logic: CloudFront Functions and Lambda@Edge handled sophisticated routing requirements that mirrored the legacy setup.
- AI-Powered Automated Testing: AI-assisted testing tools simulated real-world traffic and DNS switching scenarios, fully validating system stability before go-live.
- Safe Testing Environment: A dedicated staging environment enabled flexible, risk-controlled operations throughout the cutover process.
- High Cache Hit Rate: Origin Shield was deployed to boost cache efficiency and reduce load on backend servers.
- Security Architecture
- A customized security layer was designed and integrated to meet enterprise requirements, incorporating AWS WAF, Shield, and ACL to strengthen protection at the edge.
- Managed Service
- 24/7 Monitoring: Real-time AWS metric tracking with automated alerts and internal platform integration for rapid incident response and SLA compliance.
- Security Governance: Detailed visibility into resource changes, with automated AWS SNS alerts to flag anomalies before they escalate.
- Strategic Cloud Support: A dedicated Technical Account Manager (TAM) supports regular optimization to align cloud usage with business goals, maximizing ROI.
