work on market-data-gateway

docs/integration-services/README.md

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+# Integration Services
+
+Integration services provide connectivity, messaging, and interoperability between internal services and external systems.
+
+## Services
+
+*Currently in planning phase - no active services deployed*
+
+## Planned Capabilities
+
+### Message Bus
+- **Purpose**: Event-driven communication between services
+- **Planned Functions**:
+  - Event publishing and subscription
+  - Message routing and transformation
+  - Dead letter queue handling
+  - Event sourcing and replay capabilities
+
+### API Gateway
+- **Purpose**: Unified API management and routing
+- **Planned Functions**:
+  - API endpoint consolidation
+  - Authentication and authorization
+  - Rate limiting and throttling
+  - Request/response transformation
+
+### External Data Connectors
+- **Purpose**: Third-party data source integration
+- **Planned Functions**:
+  - Alternative data provider connections
+  - News and sentiment data feeds
+  - Economic indicator integrations
+  - Social media sentiment tracking
+
+### Notification Service
+- **Purpose**: Multi-channel alerting and notifications
+- **Planned Functions**:
+  - Email, SMS, and push notifications
+  - Alert routing and escalation
+  - Notification templates and personalization
+  - Delivery tracking and analytics
+
+## Architecture
+
+Integration services will provide the connectivity fabric that enables seamless communication between all platform components and external systems, ensuring loose coupling and high scalability.