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SignalGrid Architecture Overview

This architecture is evolving. It reflects the current product direction and implementation shape, not a final production blueprint.

SignalGrid is a Zero Trust orchestration platform for shared and mobile work environments. SignalGrid enables secure, contextual, real-time access by continuously evaluating identity, device trust, and operational context.

Category placement

SignalGrid sits between identity, device management, and operational workflows to make trust decisions at the moment of use.

Layered model

  1. Identity systems

    • Upstream identity and role context from enterprise IdPs.
    • Badge-to-user and user-to-session mapping inputs.

  2. Device / posture systems

    • Device posture and compliance signals from managed sources.
    • Session-relevant telemetry used to assess trust conditions.

  3. SignalGrid core

    • Session engine
    • Policy engine
    • Context engine
    • Mode engine
    • Trust decision flow and action orchestration

  4. Integrations / governance

    • Downstream enforcement and event systems (e.g., NAC, SIEM, ITSM).
    • Auditability, integration logging, and operational review paths.

Core engine responsibilities

Session engine

Normalizes incoming session-start inputs, associates identity and device context, and creates a deterministic evaluation transaction.

Policy engine

Evaluates policy rules against normalized session data and trust signals to produce ALLOW, DENY, or STEP_UP decisions with rationale.

Context engine

Aggregates operational context (e.g., posture, location, and relevant runtime state) used for policy evaluation and decision explainability.

Mode engine

Applies environment and operating mode controls (for example, demo-oriented vs stricter paths) so behavior remains explicit and observable.

Trust decision flow

[Identity Signals]   [Device/Posture Signals]   [Context Signals]
         \                    |                     /
          \                   |                    /
                  [Session Engine]
                         |
                  [Context Engine]
                         |
                  [Policy Engine]
                         |
                   Decision Output
             (ALLOW | DENY | STEP_UP)
                         |
              [Integrations + Governance]
                         |
      Audit Evidence + Operational Feedback Loop

Why this architecture matters

  • It links risk controls and operational workflows in a single decision path.
  • It makes trust decisions explicit, explainable, and reviewable.
  • It supports resilience by preserving governance and integration feedback loops even as deployment modes evolve.