Case-Study Hub

AWS DevOps Case Studies: Terraform, App Runner, WAF

Real Clearview engagements where a client needed AWS infrastructurethat engineers could actually operate — container deploys on AWS AppRunner via the aws_apprunner_service Terraform resource, budgetsand cost alerts in Terraform, IAM-scoped Cognito + S3 direct uploads,WAF rate-limit rules that actually count real clients, CloudFrontorigin-request hardening, and an event-driven AWS architecture thatstayed observable for a decade. Each post is buyer-shaped: what thearchitecture looked like, what we shipped, and what it takes to runthe same on yours.

Essays
6
Contributors
2
First filed
Jan 2024
Latest
Aug 2026
Written by NH cv
  1. aws

    How a CloudFront Custom Error Page Leaked JWTs to S3: A Case Study

    How a CloudFront custom-error rule leaked JWT to S3 — Origin Request Policy fix.

    12 min
  2. technology

    The most Flexible AWS Savings Plan

    AWS Compute Savings Plans without instance-family lock-in.

    4 min
  3. aws cost optimization

    Migrating EC2 to AWS Graviton (ARM): A Cost-Reduction Case Study

    EC2 → Graviton (ARM64) migration on M6g / C7gd / R7g families.

    7 min
  4. budget

    AWS Budgets and Alerts with Terraform: A Cost-Monitoring Case Study

    AWS Budgets + Slack alerts in Terraform, SNS-routed before the invoice hits.

    5 min
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