Cariuma faced several key challenges, particularly when high-demand items went out of stock: 1. Communication of Product Availability: Popular products frequently sold out, and it was crucial to communicate this to users in a way that didn’t frustrate them. The previous product page didn’t effectively highlight when an item was out of stock, leading to confusion. 2. Missed Conversion Opportunities: There was no clear way for users to sign up for restock notifications, which meant they often lost interest in products they couldn’t purchase at the moment, resulting in missed sales. 3. User Flow Confusion: The existing product page layout lacked clarity during stock-outs, making it difficult for users to navigate or take action, leading to higher bounce rates.