Verbaco™ Architecture

The Verbaco™ system architecture is designed from the ground up to meet the rigorous demands of public sector and enterprise-grade AI deployments. From secure ingress and encrypted APIs to multilingual AI and modular automation, every layer is engineered for resilience, scalability, and control.

High-Level Architecture Overview

Verbaco™ consists of five key layers:

  1. User Interface Layer
    • Web, mobile, or embedded front-end
    • Optional Teams or Slack connectors
    • Supports branded UI and multilingual input
  2. AI and NLP Engine
    • OpenAI-backed response generation
    • Contextual memory and fallback routing
    • Translation layer with user locale detection
  3. Knowledge and Retrieval Layer
    • Embedding + vector store (via Azure, Redis, or Weaviate)
    • Secure document processing with source referencing
    • Controlled knowledge domains per bot/user role
  4. Automation & Integration Layer
    • n8n workflow engine for no-code logic and API calls
    • Integrates REST, GraphQL, SOAP, Azure services
    • Conditional logic, branching, and response shaping
  5. Infrastructure & Security Layer
    • Azure Kubernetes Service (AKS) cluster
    • Azure API Management (APIM) for routing and auth
    • HTTPS via DigiCert and cert-manager
    • Ingress isolation and firewalling
    • RBAC, audit logging, container scanning

Deployment Architecture

  • Cloud Native: Azure-native stack with scalable nodes
  • Ingress Security: All traffic encrypted via HTTPS, ingress controllers with isolation
  • API Gateway: Azure APIM handles versioning, throttling, and authentication
  • Data Privacy: PII redaction options, optional data residency controls
  • Observability: Integrated logs, telemetry, alerting, and usage dashboards

Security Framework

We apply a STRIDE threat model across all services:

  • Spoofing: API token verification and auth headers
  • Tampering: Immutable logs and container image signing
  • Repudiation: Full audit trail of workflows and LLM responses
  • Information Disclosure: TLS 1.3, encrypted secrets
  • Denial of Service: Rate limiting via APIM
  • Elevation of Privilege: Role-based access control, scoped API keys

Compliance-Ready

Verbaco™ is aligned with:

  • NCSC Cloud Security Principles
  • GDPR and UK Data Protection Act
  • ISO 27001 hosting standards
  • Optional private hosting or on-prem installation
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