> For the complete documentation index, see [llms.txt](https://docs.learncard.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.learncard.com/sdks/learncard-network/architecture.md).

# Architecture

The LearnCloud Network API is deployed as a serverless application on AWS with the following components:

```mermaid
graph TB
    subgraph "AWS Infrastructure"
        api["API Gateway"]
        lambda["Lambda Functions"]
        sg["Security Groups"]
        vpc["Virtual Private Cloud"]

        subgraph "Storage"
            neo4j["Neo4j Database"]
            redis["Redis Cache"]
            sqs["SQS Queue"]
        end
    end

    client["Client Applications"] -->|"HTTP/HTTPS"| api
    api -->|"Invokes"| lambda
    lambda -->|"Query/Update"| neo4j
    lambda -->|"Cache"| redis
    lambda -->|"Send Notifications"| sqs

    sqs -->|"Trigger"| notificationWorker["Notification Worker Lambda"]
    notificationWorker -->|"HTTP"| webhooks["External Webhooks"]
```


---

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