# Maternity Care Platform: Multi-Tenant SaaS Architecture
> A strategic proposal for a scalable, compliant maternity care platform using multi-tenant SaaS architecture and Pega's Center-Out principles.

Tags: software-architecture, saas, multi-tenancy, healthcare-it, pega, system-design, compliance, clinical-workflows
## Maternity Care: A Strategic Architectural Proposal
*   **Goal:** Establish a scalable, compliant foundation for growth using ARB governance.
*   **Driver:** Transition from a single-hospital system to a multi-tenant SaaS platform.

## Core Principles
*   **One Job, One Owner:** Separation of SaaS/Tenancy, Domain Logic, and Integrations.
*   **Layered Isolation:** Purpose-built layers for independent system evolution.

## The Three-Layered Model
*   **Layer 1 (Maternity Care):** Multi-tenant SaaS entry point. Owns configuration, subscriptions, and roles. Does NOT own clinical logic.
*   **Layer 2 (Prenatal Care):** The Canonical Domain System of Record. Owns medical data models, case lifecycles, and clinical workflows. Tenant-neutral.
*   **Layer 3 (Integrations):** Protective anti-corruption layers for external system API contracts and versioning.

## Strategic Benefits
*   **Clinical Integrity:** Healthcare cases live in the canonical domain to prevent business logic from polluting medical models.
*   **Business Value:** Delivers stability (reduced regression risk), scalability (onboard new tenants without refactoring), and speed (parallel development).
*   **Best Practices:** Aligns with Pega Center-Out Architecture and canonical data modeling.

## Governance
*   Defines clear ownership between delivery teams, domain owners, integration teams, and platform teams. 
*   Mitigates high risk of future data loss and compliance overhead by correcting ownership boundaries now.
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