Integration Gateway

Executive Summary

Integration Gateway defines the logical boundary that mediates Algosure's external system interactions. It handles integration concerns while preserving Domain ownership of business interpretation.

Why This Exists

Without an integration gateway, provider-specific authentication, errors, rate limits, retries, data mapping, and security concerns can leak into Domain modules and create tight coupling.

Owner

The owner is the Chief Product Officer and Enterprise Architect.

Business Value

The Integration Gateway centralizes integration governance and reduces provider coupling while keeping Algosure business facts owned by Domains.

Gateway Responsibilities

flowchart TB
    Domain[Owning Domain]
    Gateway[Integration Gateway]
    Credential[Credential and Consent Boundary]
    Adapter[Provider Adapter]
    External[External System]
    Events[Integration and Domain Events]
    Audit[Audit Data]

    Domain --> Gateway
    Gateway --> Credential
    Gateway --> Adapter
    Adapter <--> External
    Gateway --> Events
    Gateway --> Audit

Responsibility	Meaning
Provider mediation	Encapsulates provider-specific contracts and behavior.
Credential boundary	Uses governed credentials without exposing secrets to Domains, AIOS, or clients.
Tenant scoping	Ensures every interaction is tenant and organization scoped where applicable.
Request validation	Validates outbound requests and inbound callbacks before processing.
Normalization	Converts provider responses into normalized integration results for Domain interpretation.
Retry and rate limiting	Applies approved reliability and provider protection policies.
Audit	Records request, response, error, retry, credential use, and event evidence.
Event publication	Emits integration observations and supports domain-owned event publication where accepted.

Gateway Rules

Rule	Requirement
Gateway does not own facts	It returns normalized results; owning Domains accept or reject business meaning.
Gateway does not bypass security	All gateway calls require tenant context, authorization, consent, and audit.
Gateway fails safely	Ambiguous provider responses become exceptions, not accepted facts.
Gateway protects providers	Rate limits and retry policies must respect provider constraints.
Gateway supports idempotency	Duplicate callbacks or retried requests must not create duplicate business effects.

Non-Implementation Boundary

This document does not define gateway technology, adapter classes, provider contracts, webhook endpoints, retry intervals, or rate-limit values.