
PRACTICE 03 — SECURITY ARCHITECTURE
First-principles architecture for enterprise, cloud and critical infrastructure. If a control needs forty pages to explain, it's the wrong control.
THE PROBLEM
Vendor reference diagrams, the last consultant's template, whatever the incumbent already sold you — stitched together over a decade, until nobody can draw the whole estate on one page and every project fights security at the end instead of building on it from the start.
Good architecture is a small set of deliberate decisions that everything else can rely on. We draw those decisions, then stay to see them built.
WHAT WE DRAW
Your systems, trust boundaries and real weak points on a single page — the drawing every incident, audit and project should start from.
Identity-first access and segmentation, sequenced so the business keeps running. No platform team required.
Landing zones and identity models that make the secure path the easy one, so teams move faster rather than slower.
IEC 62443 zones and conduits, Purdue-model pragmatism — critical infrastructure drawn by people who've worked both sides of the fence.
A standing architecture function for firms too small to staff one — reviewing designs, setting patterns, keeping projects honest.
We map every design to the standards your auditors and regulators expect — after it's been built for your firm. An architecture drawn from a compliance matrix defends the matrix; one drawn from how you actually operate defends the business.
And because what gets built is rarely exactly what was drawn, we stay through delivery as design authority, so exceptions are decisions rather than surprises.
WHERE WE'RE USUALLY CALLED IN
Get the few big decisions right, and the rest of the estate falls into place.
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