To assist guests in finding items in stores being remodeled, Target pulled out all the stops.
One initiative involved standing up an SMS-based store search, which allowed users without the Target application to find items in the store.
Inventory searches would query the Target API for a product in a store and get back an aisle / adjacent location.
We then took that aisle & recursively searched the store's map (conveniently served as an SVG) to determine where the aisle was located in the store (e.g., back-left).
The service ran for 8 months in 47 stores and sent/received over 500,000 messages.
Thanks to Scott Vehrenkamp for pointers on natural language processing. The boy is one smart cookie.