Md Aminul Islam and Zakia Afroz 2025. AI-Augmented Business Intelligence for Campaign Performance Optimization in U.S. Retail and e-Commerce: A Mixed-Methods Study of Marketing ROI. American Journal of Scholarly Research and Innovation. 4, 01 (Dec. 2025), 732–774. DOI:https://doi.org/10.63125/h9j70a40.