digraph MicroservicesArchitecture {
    // API Gateway
    api_gateway [label="API Gateway", type="application", shape="box"];
    
    // Microservices
    user_service [label="User Service", type="application", shape="box"];
    product_service [label="Product Service", type="application", shape="box"];
    order_service [label="Order Service", type="application", shape="box"];
    payment_service [label="Payment Service", type="application", shape="box"];
    notification_service [label="Notification Service", type="application", shape="box"];
    
    // Shared Services
    auth_service [label="Authentication Service", type="application", shape="box"];
    config_service [label="Configuration Service", type="application", shape="box"];
    
    // Data Stores
    user_db [label="User Database", type="technology", shape="box"];
    product_db [label="Product Database", type="technology", shape="box"];
    order_db [label="Order Database", type="technology", shape="box"];
    
    // Infrastructure
    service_registry [label="Service Registry", type="technology", shape="diamond"];
    message_broker [label="Message Broker", type="technology", shape="diamond"];
    load_balancer [label="Load Balancer", type="technology", shape="diamond"];
    cache [label="Redis Cache", type="technology", shape="box"];
    
    // External Services
    payment_provider [label="External Payment Provider", type="application", shape="box"];
    email_service [label="Email Service", type="application", shape="box"];
    
    // API Gateway to Services
    api_gateway -> user_service [label="routes to"];
    api_gateway -> product_service [label="routes to"];
    api_gateway -> order_service [label="routes to"];
    api_gateway -> payment_service [label="routes to"];
    
    // Service Discovery
    user_service -> service_registry [label="registers with"];
    product_service -> service_registry [label="registers with"];
    order_service -> service_registry [label="registers with"];
    payment_service -> service_registry [label="registers with"];
    notification_service -> service_registry [label="registers with"];
    
    // Service Communication
    order_service -> user_service [label="calls"];
    order_service -> product_service [label="calls"];
    order_service -> payment_service [label="calls"];
    order_service -> message_broker [label="publishes to"];
    
    notification_service -> message_broker [label="subscribes to"];
    notification_service -> email_service [label="sends via"];
    
    payment_service -> payment_provider [label="integrates with"];
    
    // Authentication
    api_gateway -> auth_service [label="validates with"];
    user_service -> auth_service [label="uses"];
    
    // Configuration
    user_service -> config_service [label="reads from"];
    product_service -> config_service [label="reads from"];
    order_service -> config_service [label="reads from"];
    
    // Data Access
    user_service -> user_db [label="stores in"];
    product_service -> product_db [label="stores in"];
    order_service -> order_db [label="stores in"];
    
    // Caching
    product_service -> cache [label="caches in"];
    user_service -> cache [label="caches in"];
    
    // Load Balancing
    load_balancer -> api_gateway [label="distributes to"];
    load_balancer -> user_service [label="distributes to"];
    load_balancer -> product_service [label="distributes to"];
}