Artificial Intelligence (AI) has revolutionised marketing by significantly enhancing customer engagement and personalisation through predictive analytics and AI-driven tools. This study highlights AI’s critical roles in automating marketing strategies, optimising customer segmentation, and improving customer satisfaction by up to 20%. The research also identifies remarkably lower operating expenditures in marketing functions with a better return on investment (ROI) because of the advantages of AI personalisation. This improves engagement and retention, as they can send highly customised advertisements and offers to customers with the help of the AI. Furthermore, this study addresses key ethical challenges such as data privacy and algorithmic bias, which must be carefully managed to ensure the responsible application of AI in marketing. The findings underscore AI’s transformative power in driving business growth while emphasising the importance of ethical frameworks to navigate potential risks. The integration of predictive analytics with AI-powered personalisation has fundamentally reshaped modern marketing, offering companies unparalleled opportunities to increase customer engagement and optimise performance.