Every business owner has had that moment. The shop opens in the morning. The shutters rise. Products are arranged neatly. A few customers walk in, look around, maybe buy something, maybe not. At the end of the day, the owner sits back and wonders — “What actually worked today?” For decades, business decisions in many parts of Tamil Nadu worked like this. A bit of instinct. A bit of experience. And a lot of hope. But something interesting has started changing quietly. Today, many businesses are slowly moving from guessing to understanding . And the bridge between the two is something called data-driven marketing . When Business Was Mostly Guesswork Think about how traditional marketing used to work. A textile shop in Madurai might put a banner outside during festival season. A clinic might distribute pamphlets in nearby streets. A restaurant might depend on word-of-mouth. Sometimes these worked beautifully. Sometimes they didn’t. But the real challeng...