This document discusses the history of net neutrality debates and regulations. It provides background on how concerns about net neutrality began in the 1990s with mergers between cable and broadband companies. It also outlines some of the key issues in net neutrality debates, such as blocking, discrimination in quality of service, and charging practices by internet service providers. The document examines approaches to net neutrality regulation in different countries and regions over time. It raises outstanding questions about practices like zero rating and discusses the development of net neutrality laws and regulations internationally.