The CTO Advisor
Keith Townsend (@CTOAdvisor)The CTO Advisor Short thoughts on public cloud and private data center. Longer than a tweet. Shorter than a blog post. #CTOShort We talk AWS, Azure, GCP and traditional enterprise IT infrastructure.
| Platform |  | Pricing | Freemium | Publishes | Twice weekly |
|---|---|---|---|---|---|
| Issues | 236 | Founded | 6 years ago | Last Issue | 4 days ago |
| Active | |||||
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ctoadvisor.substack.comLatest Issues
Your docs don’t fail. That’s the problem.
Last week my AI agent rebuilt documentation I already had. It wrote a new index for a directory that already had an index. It wrote a new architecture document beside the architecture document, then politely fenced the real one as legacy. I...
Two Escapes, One Problem
I had two agent escapes in production this week. They looked like different failures. They were the same failure.
The first was the classic. I gave an agent access to my AWS account to stand up and run some lab work. It executed the work c...
The Xeon Exit Is a Batch Lane, Not a Serving Lane
I have a custom model that no cloud model garden will host. It is a LoRA-tuned Gemma 4 26B mixture-of-experts, merged into open weights. That is the strongest position you can hold at the reasoning layer, because no garden hosts it and ther...
The Model Learned My Voice, Not My Judgment
One of the projects I’ve been working on over the past few weeks started with a simple question: can I fine-tune a model to reason more like I do?
The obvious approach was to train on my corpus and validate against my 4+1 AI Infrastructure...
Deconstructing the Cloud Value Add
I rebuilt the same RAG pattern twice last week.
Once on AWS: Titan embeddings into S3 Vectors, with retrieval logic I owned. Once in vCTOA on GCP: Gemini embeddings into Firestore vector search, with my own hybrid retrieval policy sitting...
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Co-Founder of @theCTOAdvisor Check out what I've done https://t.co/zKxlnikHm7 Videos https://t.co/Zrp8nMbAWH
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