The document discusses profiles, personas, and patterns used in website experience optimization. It defines key terms like profiles (categories that track visitor behavior), profile keys (variables that relate profiles to patterns), patterns (predefined groups of typical visitors), and profile cards (sets of profile keys representing relationships). It explains how profiles are assigned to website content and visitors, how their behavior creates a unique profile, and how their profile can be matched to patterns to personalize experiences. Measuring these patterns over time can provide insights into website usage and conversion rates.