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Standalone architecture briefs on the problems that don't fit a series — the models, taxonomies, and trade-offs enterprise architects are actually asked to defend. Each note ships as an infographic, a deep-dive PDF you can hand to your team, and a checklist, in the same vendor-neutral spirit as the rest of this site.

By Tom Ward, Enterprise Architect — Cloud & Infrastructure

IT Economics· 2026-07-23 PDF
Three Views. One Dollar.
Finance sees a GL account, IT sees a Linux server, and the business asks what it costs to originate a loan — the same dollar in three languages. A working guide to the TBM Unified Model: the four-layer cost taxonomy, the allocation ladder that decides whether anyone believes your numbers, and the configure-versus-customize trap that quietly costs organizations their benchmark alignment.
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Field Notes

Three Views. One Dollar.

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