Susan Walsh, also known as The Classification Guru, is a leading expert in data cleaning and classification. With over a decade of experience, she founded The Classification Guru Ltd in 2017, helping over 100 clients globally solve their "dirty data" challenges. Author of Between the Spreadsheets: Classifying and Fixing Dirty Data, the upcoming Optimizing Sales & Marketing Data, and creator of the COAT framework, Susan empowers businesses to save time and money by unlocking the value of clean, reliable data. Her online courses on Pluralsight, O’Reilly, and The Analytics Institute, along with her TEDx talk "Say NO to NO", showcase her dedication to sharing knowledge. In 2024, she launched Samification, a self-service supplier normalisation tool, further cementing her reputation as an industry innovator. A sought-after global speaker and influencer, Susan is your trusted partner in tackling dirty data and achieving data excellence.