# Learning check

You are the Solution Architect for Zen Electron. The company is launching a major platform upgrade that involves several new integrations with external systems. You must recommend the correct Composable Commerce integration pattern for each requirement.

The requirements are:

- **Data sourcing**: Core Product data is retrieved from a PIM and the Embedded Prices come from the ERP. The integration must support scenarios where images and prices are imported before their corresponding Products exist in the Project.
- **Order post-processing**: When an Order is created, three separate downstream processes must be triggered: sending a confirmation email, updating the ERP, and syncing the sale to a marketing analytics platform. The company wants to use a single, scalable mechanism for this.
- **Bulk updates**: A developer is writing a script to update prices on 80,000 Products using the standard HTTP API. During testing, the script receives some 502 and 503 errors. The script must be made more robust.
- **Real-time inventory check**: For a small set of high-demand Products, the website must perform a real-time stock check against a third-party inventory system before a customer can add the item to their Cart. The business and its customers are extremely sensitive to performance and want to avoid any solution that could slow down the **add to cart** action.

## Related pages

- [Area overview page with navigation](/learning-integrate-with-composable-commerce.md)
- [Previous page: Use case: Product and inventory](/learning-integrate-with-composable-commerce/integration-patterns/integrate-with-external-product-and-inventory-data.md)