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Security Architecture
— zero trust, by design

Secure-by-design enterprise architecture for cloud, hybrid and AI systems — threat modelling, reference architectures and design reviews accelerated by agentic AI, decided by architects.

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SECURITY SERVICES
Topics we cover
Security architecture reviewZero Trust architectureSecure by designThreat modelling (STRIDE, PASTA)SABSA / TOGAFCloud security architectureLanding zonesCybersecurity mesh architectureSecure AI architectureAI gatewayAgentic AI threat modellingPost-quantum cryptography readinessCrypto-agilityHLD / LLD review
Status quo · late 2026

What has changed — and why it matters now

01

Reviews are AI-accelerated

Agentic AI reads HLDs, IaC and diagrams, drafts STRIDE threat models and flags control gaps in hours. Architects spend their time on the decisions, not the paperwork.

02

Zero trust became measurable

CISA ZTMM and NIST SP 800-207 give maturity scales. Boards ask where you are on identity, device, network, application and data pillars — and what is next.

03

Crypto-agility is on the roadmap

NIST PQC standards are final and EU / UK migration guidance is out. Every new design needs a cryptographic inventory and a path to ML-KEM / ML-DSA.

How we approach it

Our method for Security Architecture

01UnderstandBusiness capabilities, data flows, trust boundaries, regulatory constraints.
02Model threatsSTRIDE / PASTA per system, attack trees for crown jewels; AI systems modelled with MITRE ATLAS.
03DesignReference architectures, landing zones, identity-centric segmentation, secure AI patterns.
04ReviewHLD / LLD reviews, IaC and pipeline security, agent-assisted control mapping to ISO 27001, NIST CSF 2.0, CIS.
05RoadmapZero-trust maturity plan, PQC migration plan, architecture principles the business can enforce.
In depth

Patterns we design

Multi-cloud landing zones

Azure CAF, AWS Well-Architected, Google Cloud Architecture Framework — guardrails as code.

Identity-centric segmentation

Conditional access, workload identity, service mesh mTLS, private connectivity.

Secure AI platform

AI gateway, prompt/response filtering, tool allow-lists, MCP server hardening, model and data isolation.

Secure API & integration

API gateways, OAuth 2.1 / OIDC, token binding, schema validation, rate limiting.

Data protection architecture

Classification-driven encryption, tokenisation, key management, sovereign regions.

What you get

Deliverables

Threat modellingHLD / LLD reviewsCI/CD pipeline securityMulti-cloud designSecure API integration
Technology-agnostic

Platforms we work across

We design for the outcome first and choose the platform second — across Microsoft, AWS and Google Cloud, and every major AI provider.

Microsoft Azure & EntraAWSGoogle CloudKubernetes & IstioHashiCorp VaultCloudflareZscalerThreat Dragon / IriusRisk
Related

More Security services

ISMS & ISO 27001 Penetration Testing SOC & Security Monitoring Identity & Access Management Vulnerability Management DevSecOps & Secure Development GDPR & Data Protection GRC Programmes

Ready to talk about Security Architecture?

One email reaches the architects and engineers who will do the work. We reply within one working day.

info@uspc.co.uk Contact page