This episode of the 'Hello $FirstName' podcast consists of an audio book chapter, namely Chapter 16. It is the second chapter in Part 3 of the book - The Prerequisites for Personalization and the chapter is called: Data & Personalization. CHAPTER 16: DATA & PERSONALIZATION Is your data clean? How much data is needed to make personalization profitable? Re-evaluate often! How to scale permissions and data Persistent customer log-ins The full book is available in print and kindle and can be bought here. (or your local amazon...) An abstract of the book can be downloaded here. All models and illustrations from the book can be downloaded here.