Last-mile delivery refers to the final step of the logistics process where a product is transported from a distribution center or warehouse to the end customer's doorstep. This stage is crucial in ensuring that customers receive their orders in a timely and efficient manner, impacting overall customer satisfaction. The effectiveness of last-mile delivery can greatly influence the success of e-commerce businesses and is often considered one of the most challenging aspects of logistics due to factors like urban congestion, varying delivery locations, and customer expectations.