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Platform Architecture

Stack9 Experience Platform Architecture delivers enterprise-grade infrastructure with multi-tenant isolation, comprehensive data management, and API-first design. Built on AWS with modern cloud-native principles, it provides the scalable foundation that powers all DXP capabilities while ensuring security, compliance, and operational excellence.

What is Platform Architecture?​

Stack9's Platform Architecture provides three foundational systems that enable enterprise-scale digital experiences:

  • ✅ Multi-tenancy - Complete tenant isolation with per-tenant resource provisioning and scaling
  • ✅ API-First Design - RESTful architecture with OpenAPI specifications and consistent patterns
  • ✅ Data Management - Entity versioning, audit trails, and comprehensive compliance support

This enterprise-grade foundation ensures Stack9 Experience can support organizations from startup to global enterprise scale while maintaining security, performance, and compliance requirements.

Multi-tenancy​

Enterprise-Grade Tenant Isolation​

Complete data separation ensures each tenant operates as if they have their own dedicated platform:

  • Data isolation - Zero data sharing between tenants
  • Resource separation - Dedicated infrastructure components per tenant
  • Security boundaries - Complete access control and permission isolation
  • Performance isolation - One tenant's usage doesn't affect others

This architecture enables multiple organizations, brands, or business units to share the same platform infrastructure while maintaining complete independence and security.

Per-Tenant Resource Provisioning​

Dedicated infrastructure for each tenant ensures optimal performance:

OpenSearch Indices:

  • Separate search indices for each tenant's content and data
  • Independent scaling based on tenant usage patterns
  • Isolated search performance and relevance tuning
  • Tenant-specific index configurations and mappings

Storage Resources:

  • Dedicated file storage for attachments and media
  • Isolated backup and recovery procedures
  • Tenant-specific retention policies
  • Secure asset delivery with presigned URLs

Webhook Endpoints:

  • Individual webhook configurations per tenant
  • Isolated event processing and delivery
  • Tenant-specific integration patterns
  • Independent monitoring and error handling

Tenant Provisioning and Bootstrapping​

Automated tenant setup ensures consistent, reliable onboarding:

Bootstrap Process:

  1. Tenant creation - Establish unique tenant identifier and configuration
  2. Resource provisioning - Create OpenSearch indices, storage buckets, and webhooks
  3. Configuration setup - Initialize email settings, sender identities, and preferences
  4. Validation testing - Verify all systems are operational before activation

Configuration Management:

  • Default settings - Pre-configured sensible defaults for immediate use
  • Custom configurations - Adapt settings to specific tenant requirements
  • Environment separation - Separate development, staging, and production configurations
  • Rollback capabilities - Restore previous configurations if needed

Scalable Infrastructure and Independent Scaling​

Cloud-native architecture enables elastic scaling per tenant:

  • Auto-scaling groups - Infrastructure adapts to tenant usage automatically
  • Load balancing - Distribute traffic efficiently across resources
  • Geographic distribution - Deploy closer to tenant users for better performance
  • Resource optimization - Right-size infrastructure based on actual usage patterns

API Reference: Multi-tenant management uses /admin/tenants, /admin/tenant/{tenant_code}/setup, and tenant administration endpoints with comprehensive tenant lifecycle management and resource provisioning.

API-First Design​

RESTful Architecture and Consistent Patterns​

Modern API design ensures predictable, developer-friendly integration:

RESTful Principles:

  • Resource-based URLs - /campaigns, /subscribers, /email_templates
  • HTTP verbs - GET for retrieval, POST for creation, PUT for updates, DELETE for removal
  • Status codes - Proper HTTP status codes for all responses
  • Stateless operations - Each request contains all necessary information

Consistent Patterns:

  • Bulk operations - /list endpoints for retrieving multiple items
  • Search functionality - POST requests for complex search queries
  • Hierarchical relationships - /campaigns/{code}/emails for related resources
  • Version tracking - All entities include version numbers for optimistic locking

OpenAPI 3.0 Specifications​

Complete API documentation enables rapid integration:

{
  "openapi": "3.0.3",
  "info": {
    "title": "Stack9 Experience API",
    "description": "Stack9 Content, Marketing and AI services",
    "version": "1.7.4.1-c838b60"
  }
}

Documentation Features:

  • Complete schemas - Full object definitions with properties and validation rules
  • Example requests - Working examples for all endpoints
  • Response formats - Detailed response structures and error handling
  • Authentication - Clear security requirements and implementation guidance

JSON Request/Response Format​

Modern data interchange with consistent JSON formatting:

  • Camel case properties - JavaScript-friendly naming conventions
  • Nested objects - Complex data structures as needed
  • Array handling - Consistent list formatting and pagination
  • Type safety - Clear data types and validation rules

Multi-tenant Aware Endpoints​

Tenant context automatically handled in all API operations:

  • Automatic tenant resolution - API key determines tenant context
  • Data scoping - All operations automatically scoped to correct tenant
  • Permission enforcement - Tenant-specific access controls applied
  • Resource isolation - No cross-tenant data access possible

API Reference: The complete Stack9 Experience API provides 100+ endpoints across admin, content, marketing, email, AI, and analytics capabilities as documented in the comprehensive OpenAPI specification.

Data Management​

Entity Versioning and Change Tracking​

Comprehensive versioning provides complete audit trails for all data:

Version Management:

  • Automatic versioning - Every entity update increments version number
  • Version history - Complete timeline of all changes
  • Point-in-time recovery - Restore any entity to previous state
  • Change attribution - Track who made what changes when

Supported Entities:

  • Email templates and snippets
  • Marketing campaigns and emails
  • Subscriber profiles and preferences
  • Form configurations and submissions
  • AI assistants and vector indexes
  • All content and configuration data

Audit Trail Capabilities​

Complete compliance support through comprehensive logging:

Audit Information:

  • User attribution - Who made each change
  • Timestamp tracking - When changes occurred with sub-second precision
  • Change details - What specific fields were modified
  • System context - API calls, user interfaces, or automated processes

Audit Use Cases:

  • Regulatory compliance - Meet GDPR, HIPAA, and other audit requirements
  • Security investigation - Track potential security issues or breaches
  • Performance analysis - Understand how data changes affect system performance
  • Quality assurance - Verify changes match intended modifications

Deleted Records and Data Recovery​

Soft delete architecture enables data recovery and compliance:

Deletion Handling:

  • Soft deletes - Records marked as deleted but not physically removed
  • Recovery capabilities - Restore accidentally deleted data
  • Compliance support - Meet data retention requirements while enabling recovery
  • Cleanup processes - Automated hard deletion after retention periods

Recovery Features:

  • Point-in-time recovery - Restore data as it existed at specific times
  • Selective recovery - Restore individual records or bulk data sets
  • Version restoration - Roll back to previous versions of existing records
  • Cross-reference maintenance - Ensure data integrity during recovery operations

Data Lifecycle Management​

Automated data governance ensures optimal storage and compliance:

Retention Policies:

  • Configurable retention - Set data retention periods per entity type
  • Automated cleanup - Remove data after retention periods expire
  • Compliance alignment - Meet regulatory requirements for data retention
  • Storage optimization - Balance compliance needs with storage costs

Data Archival:

  • Long-term storage - Move old data to cost-effective archival storage
  • Query capabilities - Search archived data when needed
  • Restoration processes - Bring archived data back to active storage
  • Compliance reporting - Generate reports on data lifecycle compliance

API Reference: Data management uses /entity/versions, /entity/versions/{version}, /entity/deleted-records, and administrative endpoints providing comprehensive versioning, audit, and recovery capabilities.

Why Choose Stack9 Platform Architecture?​

Enterprise-Ready from Day One​

Traditional platforms often struggle with enterprise requirements:

Basic Platform + Enterprise Bolt-ons = Complex, Fragile Architecture

Stack9 provides enterprise architecture natively:

Enterprise-Native Platform = Scalable, Secure, Compliant Foundation

Operational Excellence​

  • High availability - Redundant infrastructure with automatic failover
  • Disaster recovery - Multi-region backup and recovery capabilities
  • Performance monitoring - Real-time system health and performance metrics
  • Automated scaling - Infrastructure adapts to load automatically

Security and Compliance​

  • Multi-layer security - Defense in depth with multiple security controls
  • Data encryption - At rest and in transit encryption for all data
  • Access controls - Fine-grained permissions and role-based access
  • Compliance frameworks - Support for GDPR, HIPAA, SOC 2, and other standards

Developer Experience​

  • Comprehensive documentation - Complete API specs with examples
  • SDK availability - Client libraries for popular programming languages
  • Testing environments - Separate sandbox for development and testing
  • Integration support - Technical assistance and best practice guidance

Real-World Example​

A global enterprise uses Stack9 Platform Architecture to:

  1. Support multiple brands - Each brand operates as separate tenant with complete isolation
  2. Scale automatically - Infrastructure adapts to seasonal marketing campaigns
  3. Maintain compliance - Complete audit trails for SOC 2 and GDPR requirements
  4. Enable global operations - Multi-region deployment with local data residency
  5. Integrate with existing systems - API-first design connects with CRM, ERP, and other platforms

Their results:

  • 99.9% uptime through redundant, scalable infrastructure
  • 100% compliance with audit trail and versioning capabilities
  • 50% reduction in integration time through comprehensive API documentation
  • Zero data breaches with enterprise-grade security controls

Best Practices​

Multi-tenant Management​

  1. Plan tenant structure - Design tenant hierarchy for organizational needs
  2. Monitor resource usage - Track utilization and optimize accordingly
  3. Implement governance - Establish policies for tenant creation and management
  4. Test tenant isolation - Verify complete data separation regularly

API Integration​

  1. Use API keys securely - Implement proper key management and rotation
  2. Handle errors gracefully - Implement retry logic and error handling
  3. Follow rate limits - Respect API limits to ensure consistent performance
  4. Version API usage - Plan for API evolution and version changes

Data Management​

  1. Plan retention policies - Balance compliance requirements with storage costs
  2. Monitor audit logs - Regular review of system access and changes
  3. Test recovery procedures - Regularly validate backup and recovery processes
  4. Document data flows - Maintain clear documentation of data processing

Next Steps​

Ready to leverage platform architecture? Explore:

  • Getting Started Guide - Learn how to begin using Stack9 Experience
  • API Reference - Dive into detailed API documentation
  • Implementation guides for specific capabilities and use cases

Stack9 Platform Architecture provides the enterprise-grade foundation that enables scalable, secure, and compliant digital experiences - ensuring your marketing technology investment grows with your organization while maintaining operational excellence.