Susan Walsh

Susan Walsh is an award-winning, globally recognised authority on data quality, classification, and data cleansing, with over 13 years of experience helping organisations turn chaotic, unreliable data into confident, revenue-driving insight. Known as The Classification Guru, she created the COAT framework (Consistent, Organised, Accurate, Trustworthy), a practical system now used by teams worldwide to bring order, credibility, and commercial value to their data.

Her bestselling book, Between the Spreadsheets: Classifying and Fixing Dirty Data, has become a trusted guide for analysts, procurement professionals, and data leaders who are tired of wrestling with messy datasets. Her upcoming title, Optimizing Sales & Marketing Data, takes that thinking into the commercial arena, showing how clean, well-structured customer and revenue data can transform growth, forecasting, and decision-making.

Susan is a TEDx speaker, a global instructor for Pluralsight, O’Reilly, and the Analytics Institute, and the founder of The Classification Guru Ltd, where she works with organisations across the world to unlock the true power of clean, trustworthy data.