Product Requirements Document: Upsell Products in Cart

1. Introduction/Overview:

This feature automatically adds three upsell products to a user's shopping cart with the primary goal of clearing out excess inventory. The system will intelligently suggest upsell products based on the contents of the cart, focusing on items currently on sale or promotion. This feature will target returning users.

2. Goals:

• Increase the number of products sold per order.
• Reduce excess inventory of sale and promotional items.
• Improve the visibility of promotional items for returning users.

3. User Stories:

• As a returning user, when I add items to my cart, I want the system to automatically suggest three relevant upsell products so that I can take advantage of potential deals and discover new items.
• As a business owner, I want the system to automatically add upsell products to customer carts so that I can clear out excess inventory of on-sale and promotional items.

4. Functional Requirements:

1. The system must automatically suggest three upsell products based on the current contents of the user's cart.
2. The system must prioritize products that are currently on sale or promotion when selecting upsell items.
3. The system must only add upsell products to the carts of returning users.
4. The system must handle the scenario where one or more of the suggested upsell products is out of stock. (See Technical Considerations).
5. If fewer than three products meet the upsell criteria (sale items, promotions, etc.), the system should suggest all available products fitting the criteria.
6. The system should display a clear indication to the user that these products have been automatically added as upsells.

5. Non-Goals (Out of Scope):

• Allowing users to easily remove upsell products from the cart in this initial implementation.
• Providing personalized upsell recommendations based on individual user purchase history (beyond current cart contents).
• Offering upsell products outside of sale or promotion items.

6. Design Considerations:

• The upsell products should be clearly distinguished from the user's originally selected items in the cart.
• Consider using a separate section in the cart labeled "You Might Also Like" or "Upsell Products."
• The UI should be straightforward and avoid being intrusive.

7. Technical Considerations:

• Inventory Management: The system needs to accurately track inventory levels to avoid suggesting out-of-stock items.
• If a suggested upsell product is out of stock, the system should select another product meeting the upsell criteria. If no alternative products are available, the upsell slot should remain empty.
• Performance: The upsell suggestion algorithm should be efficient to avoid slowing down the cart loading time.

8. Success Metrics:

• Increase in the average number of products per order.
• Reduction in the amount of excess inventory for sale and promotional items (measured weekly).
• Track the percentage of users who proceed to checkout with the upsell products in their cart.

9. Open Questions:

• Should there be a maximum limit on the total number of upsell products added to the cart?
• How frequently should the upsell suggestions be updated if the user changes the cart contents?