Integration Principles

Executive Summary

Integration Principles defines the rules that govern how Algosure connects to external systems. Integrations must be tenant-aware, secure, auditable, reliable, rate-limited, and aligned to Domain ownership.

Why This Exists

External systems can be unreliable, inconsistent, incomplete, unavailable, or governed by changing external policies. Principles keep integration behavior safe and predictable.

Owner

The owner is the Chief Product Officer and Enterprise Architect.

Business Value

Clear principles reduce provider coupling, improve supportability, and prevent external systems from weakening Algosure's DDD and security boundaries.

Principles

Principle	Meaning
External authority remains external	Algosure does not become SARS, CIPC, CSD, CIDB, COIDA, B-BBEE, payment, funding, marketplace, email, storage, signature, or messaging authority.
Domain interpretation is explicit	External data becomes an Algosure fact only when the owning Domain accepts and interprets it.
Tenant-bound by default	Credentials, consent, requests, responses, webhooks, files, events, and audit are tenant-scoped.
Secure by design	Authentication, authorization, encryption, secret handling, validation, and least privilege apply to every integration.
Event-driven where appropriate	Domain-significant external observations should publish governed events.
Reliable and observable	Retries, idempotency, rate limiting, error handling, dead-letter handling, and audit must be planned.
Provider abstraction	Provider-specific behavior stays behind integration boundaries where practical.
No final API specs in architecture	Architecture defines responsibilities and standards before endpoint-level design.

Required Integration Controls

Control	Requirement
Tenant context	Required on every integration interaction.
Organization context	Required where external data belongs to a customer organization.
Audit	Required for requests, responses, failures, retries, credential use, and accepted facts.
Retry policy	Required for transient failures.
Error handling	Required for provider errors, validation failures, authorization failures, timeout, and malformed data.
Rate limiting	Required to protect Algosure and comply with provider limits.
Idempotency	Required where duplicate requests or callbacks can create duplicate effects.
Data classification	Required before storing, indexing, using in AIOS, or exposing external data.

Non-Implementation Boundary

This document does not define code, provider SDKs, connection configuration, final contracts, queues, or retry intervals.