Writing

Notes on software delivery, AI and digital sustainability. First published on LinkedIn.

• Four AI models, one real task — the model-selection matrix7 Oct 2026

  Over the last few weeks I compared four AI models on a real task for a client: suggesting restock orders for a wholesale distributor, around 560 products from two suppliers. I expected the comparison to be about…

• Carbon awareness vs. energy efficiency28 Sep 2026

  When people talk about greener software, they usually mean making it more efficient: fewer servers, lighter pages, fewer tokens. That matters, but it's only one of two levers.

• Speed is the agent's job. Judgment stays ours.23 Sep 2026

  Last week I sat in a webinar where the host described running an entire e-commerce business almost hands-off. AI agents triage customer suggestions, decide which features matter, build them, deploy, QA, and even…

• Your more-efficient AI probably didn't cut your carbon18 Sep 2026

  In my last post I wrote about picking the right-sized model as the biggest lever on both cost and carbon. But I mentioned that efficiency gains don't reliably shrink your total footprint. Sometimes they grow it.

• Right-sized model = biggest lever on tokens and emissions15 Sep 2026

  Since earning the Green Software Practitioner certification, I've been reading model launch announcements differently.

• Green Software Practitioner certification29 Aug 2026

  Just earned the Green Software Practitioner certification from the Green Software Foundation. I got a sharper way to think about software and carbon. Three things stuck: 1. There are only three levers. Energy…