Hydrogen is a key enabler in the global transition to sustainable energy systems, offering high energy density, zero emissions, and long-term storage capabilities. Its role in achieving net-zero carbon goals is underscored by its ability to integrate with renewable energy sources like wind and solar, addressing challenges such as energy intermittency and supporting diverse applications. This chapter introduces hydrogen (re)fueling stations (HRSs) as critical infrastructure in the hydrogen economy. It highlights the physical properties of hydrogen that necessitate unique design, safety, and operational considerations and compares hydrogen and natural gas properties. Additionally, the chapter provides an overview of HRS structures and the technical components, and then it discusses the challenges of introducing and managing HRS to set the stage for the risk management strategies detailed in the subsequent chapters.