> ## Documentation Index
> Fetch the complete documentation index at: https://docs.finhub.cloud/llms.txt
> Use this file to discover all available pages before exploring further.

# Architecture

> Integration architecture overview

# Integration Architecture

Overview of FinHub API integration architecture.

## Architecture Diagram

```
Your Application
       │
       ▼
   API Gateway ─────► Authentication
       │
       ▼
   FinHub APIs
   ┌─────────────────────────────┐
   │  FinCore  FinTrans  FinCard │
   │  FinCheck FinPOS   FinExE   │
   └─────────────────────────────┘
       │
       ▼
   Webhooks ──────► Your Webhook Handler
```

## Key Components

| Component         | Description                 |
| ----------------- | --------------------------- |
| **API Gateway**   | Entry point, authentication |
| **Microservices** | Product-specific services   |
| **Webhooks**      | Event notifications         |

## Integration Patterns

* **Synchronous**: Request/response
* **Asynchronous**: Webhooks for events
* **Batch**: Bulk operations

## Best Practices

* Implement retry logic
* Handle webhooks idempotently
* Use correlation IDs
* Log all transactions