To start, I would conduct a comprehensive analysis of the existing user data. This would encompass understanding customer purchasing patterns, search behaviors, average spending amounts, and peak activity times. For instance, if our analysis indicates that users often add items to their cart without finalizing the purchase, we could implement a follow-up email strategy to remind them of their selected items and offer a limited-time discount. Additionally, I would explore the possibility of launching a loyalty program that rewards customers with points for every dollar spent. These points could be redeemed for discounts on future purchases, incentivizing higher spending to accumulate more points and discounts. Finally, I would investigate cross-selling and upselling strategies. By leveraging AI and Big Data effectively, we can deliver precise and personalized product recommendations, prompting customers to buy related or higher-end products. These strategies will significantly enhance the average spending per user on our website.