Express infrastructure audit + Sentinel monitoring system built with Terraform. Hourly precision. Read-only access. Yours to keep.
Standard AWS billing shows 12 data points a year. Sentinel tracks every resource every hour — 8,760 data points. You catch cost spikes in hours, not at the end of the month.
Start Audit →The Problem
AWS bills grow quietly. No alerts. No visibility. Until you check the invoice at the end of the month.
Ghost EC2 instances
Test servers from 6 months ago, still running 24/7. $15–200/month each, silently burning budget.
Oversized RDS databases
db.r5.large for an app with 10 users. You're paying for capacity you'll never use.
NAT Gateway data charges
Misconfigured routing sends all traffic through NAT. $0.045/GB adds up fast — often $30–300/month surprise.
Forgotten snapshots & volumes
EBS snapshots from deleted instances, unattached volumes, old AMIs. Small per item, large in total.
Why Sentinel
You don't get a dashboard login that disappears when you stop paying. You get working Terraform code — yours forever.
Cost and Usage Reports stored in your own S3 bucket. Every resource ID tracked hourly. You own the data — no vendor lock-in.
Audit uses ReadOnlyAccess IAM role. I see your costs and resources — I cannot create, modify, or delete anything in your account.
The entire Sentinel monitoring system is delivered as Terraform code saved in your GitHub repository. Any developer can read, modify, or extend it.
How Sentinel works
Pricing
Choose the depth of analysis you need. All plans include read-only access, Terraform code, and documentation.
Quick entry point. Catch the obvious money drains and get Sentinel running. Perfect if you've never done an AWS audit.
Full Sentinel deployment with CUR infrastructure. Hourly data on every resource. You get an actionable roadmap — not just a list of problems.
Continuous monitoring setup with monthly reporting. Add $97/mo maintenance for hands-off cost control — I watch it for you.
Not sure which plan?
If you've never done an AWS audit — start with Starter. It will already find things. If you want the full CUR infrastructure with hourly tracking — Standard. If you want me to keep watching your costs every month — Advanced + $97/mo maintenance.
Deliverables
Savings Report
Itemised list of every cost issue found — resource ID, estimated monthly waste, and recommended action. No vague recommendations.
Terraform Sentinel Code
Complete monitoring infrastructure as code. Committed to your GitHub repo. Any developer can read, modify, or extend it.
Billing Alerts Active
CloudWatch billing alarms configured and tested. You get notified before costs grow — not after the invoice arrives.
Documentation
How the monitoring works, what each alert means, and how to query your CUR data. Written for your team, not just for me.
Read-only access
The audit uses a ReadOnlyAccess IAM role — the most restrictive access level that still allows cost analysis. I can see your resources and billing data. I cannot create, modify, delete, or touch anything.
The Sentinel monitoring system is deployed separately using the same OIDC keyless method — no permanent credentials stored anywhere.
Get Started
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