export const handler = async (event) => {
  const orderData = JSON.parse(event.body);
  
  // Complex business rules the platform doesn't support
  const customPricing = await calculateEnterpriseDiscount({
    customer: orderData.customer,
    items: orderData.items,
    volume: orderData.totalValue,
    paymentMethod: orderData.payment.method
  });
  
  // Multi-channel inventory reservation
  await reserveInventoryAcrossChannels(orderData.items, orderData.storeCode);
  
  // Custom payment flow for B2B customers
  if (orderData.customer.type === 'b2b') {
    await createCreditTermsOrder(orderData, customPricing);
    await notifyAccountManager(orderData.customer.accountManager);
  } else {
    await processImmediatePayment(orderData, customPricing);
  }
  
  // Sync to ERP and fulfillment systems
  await syncToERP(orderData, 'order_created');
  await triggerFulfillmentWorkflow(orderData);
  
  return {
    statusCode: 200,
    body: JSON.stringify({ 
      orderId: orderData.id,
      finalPrice: customPricing.total,
      estimatedDelivery: customPricing.delivery
    })
  };
};