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Banking architecture

Curated insights and technical field notes on Banking architecture.

Current note

ISO 20022 coexistence ends, and translation layers come due

The newest published argument and its visual artifact lead the page.

Editorial posture

The first note sets the editorial contract: one dated argument, explicit tradeoffs, and visual proof close to the section it explains. More lanes appear when enough published work gives them substance.

Decision frame

Recommendation, rejected paths, and the operating proof behind the call.

Visual proof

Diagrams and original artifacts stay near the argument they explain.

Source posture

Public claims stay tied to released work or cited material.

Payments

ISO 20022 coexistence ends, and translation layers come due

Your bank says it is "ISO 20022 ready" for the November 22 cutover. Check the docs and it is usually a translation layer - MT to MX at the SWIFT boundary, MX back to MT inside. That is compliant, and it quietly throws away the structured data that was the whole point.

Lead essay

The current Doric argument leads the index ahead of the chronological archive.

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Latest Notes

Current library

One approved argument leads the library.

The archive starts narrow by design. New Field Notes enter only when they meet the same proof, source, and visual-artifact bar.