ATC-009 Cost-aware design, guide
The cost anatomy of an LLM feature
One "ask the docs" box, priced line by line on AWS and Azure. Where the money really goes, and how the same feature drops from $1,200 to $56 a month.
Cost-aware design, guide
Cloud and AI architecture that works without breaking the budget.
Notes, reviews and field guides on AWS, Azure and agentic AI, written by a working architect for the people who build systems and the people who pay for them.
Latest articles
All articles ATC-006 Agentic AI, guide
Giving a coding agent production database access: the boundary is the grant, not the code
A read-only MCP server for a production MySQL database on RDS. Why the database grant is the real boundary, what else to layer on, and the Azure SQL version.
Agentic AI, guide
ATC-007 AWS, guide
A QR-code redirector with click analytics, for pennies a month
Fast redirects with analytics that never slow the user down. The serverless AWS design, an even cheaper edge version, and the Azure equivalent.
AWS, guide
ATC-008 AWS, guide
A static website on AWS for about fifty cents a month
S3, CloudFront, Route 53 and ACM, defined in one small CDK stack. The setup, the gotchas, what it really costs, and the cheapest way to do the same on Azure.
AWS, guide
ATC-005 AWS, guide
Google Drive as the back office: a private photo gallery on AWS for about a dollar a month
Keep Google Drive as the source of truth without putting it in the request path. Read-only sync, content-versioned S3 keys and CloudFront signed cookies.
AWS, guide
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