"""
Application Architecture Overview

MerchantsOfHope - Recruiting Platform

1. Multi-Tenant Architecture:
   - Each TSYS Group line of business operates as an isolated tenant
   - Separate data storage per tenant with shared application code
   - Tenant identification via subdomain or header
   - Database-level isolation with tenant_id foreign keys

2. Technology Stack:
   - FastAPI: Modern, fast web framework with async support
   - SQLAlchemy: ORM for database operations
   - Pydantic: Data validation and settings management
   - JWT: Token-based authentication
   - PostgreSQL: Primary database (with migration support)
   - Redis: Caching and session storage
   - Celery: Background task processing

3. Core Modules:
   - Authentication & Authorization: OIDC, social login, RBAC
   - Tenant Management: Isolated business units
   - User Management: Job seekers, providers, admins
   - Job Management: Postings, applications, lifecycle
   - Resume Management: CVs, portfolios, profiles
   - Notification System: Email, in-app notifications

4. Security & Compliance:
   - OIDC for secure authentication
   - Role-based access control
   - Data encryption at rest and in transit
   - PCI DSS compliance for payment data
   - GDPR compliance for European users
   - SOC 2 compliance for security controls
   - FedRAMP compliance for government work
   - Accessibility compliance (WCAG 2.1 AA)

5. Deployment:
   - Docker containerization
   - Docker Compose for local development
   - Kubernetes-ready manifests
   - Health checks and monitoring
   - Environment configuration via settings

This architecture ensures scalability, maintainability, security, and compliance
with all required standards while providing a solid foundation for the recruiting platform.
"""