Businesses are working hard to stand out and develop deep relationships with their target audience in today's digital world, when information is abundant and attention spans are short. Data-driven personalisation is useful in this situation. Companies may customize experiences, content, and tactics to meet unique tastes and requirements by utilizing the plethora of information at their disposal and cutting-edge technology. This article explores the idea of data-driven personalisation, including its advantages, difficulties, and revolutionary effects on client engagement.