Tag: infrastructure

• When Let's Encrypt Broke Our HL7 mTLS: A Certificate Incident Post-Mortem (10 Mar 2026)
  A public CA silently dropped the clientAuth EKU from renewed certificates, breaking our healthcare HL7 mTLS integration. Here's what happened, what we learned, and why self-managed CAs are the right choice for healthcare interoperability.
• Terraform AWS Multi-VPC Architecture Guide (13 Nov 2025)
  Building a production-ready multi-tier architecture with VPC peering, Auto Scaling, RDS, and ECS Fargate for log aggregation