Shelf monitoring is the process of tracking the availability, condition, and placement of products on the shelves of a retail store. It is a vital aspect of retail operations, as it directly affects the sales performance, customer satisfaction, and profitability of a store. Poor shelf management can lead to stockouts and overstock, which can cost retailers $1.1 trillion globally in lost revenue per year. Additionally, shelf monitoring can help enhance customer satisfaction and retention, as customers expect to find the products they want, when they want them, and where they want them.