This paper presents an AI-based sentiment analysis system to extract meaningful insights from the massive customer feedback data generated by the explosion of e-commerce. It uses an approach that balances accuracy and interpretability by integrating traditional machine learning techniques with cutting-edge deep learning models. It achieves 89.7% accuracy on various large-scale datasets, outperforming existing methods, and demonstrates improved customer engagement and operational efficiency through practical implementations on multiple e-commerce platforms. It highlights the potential and challenges of AI-based sentiment analysis in e-commerce environments, and provides insights into practical deployment strategies and future directions for improvement.