This document provides an overview and introduction to 5G networks for mobile operators. It discusses the expectations for the 5G era, how 5G differs from 4G networks through improved latency, speeds and support for new use cases. It outlines the timeline for 5G standards completion and connections growth forecasts. It also examines the enabling conditions required for 5G deployment, including technology, policy and market readiness. Key areas that operators must consider to create and capture value from 5G are explored, along with the associated costs.