This technical report discusses the critical aspects of preparing for a Distributed Denial of Service (DDoS) attack, a significant cyber threat that targets the limitations of IT systems. The report outlines the nature of DDoS attacks, which can be executed using compromised hosts known as botnets, making them difficult to defend against. It categorizes DDoS attacks based on their targets and methods, detailing network bandwidth, memory, and CPU consuming attacks. The report also examines the growth of DDoS attacks over the years and the various motivations behind them, including revenge, extortion, and political reasons. Furthermore, it presents a structured approach to DDoS protection planning, emphasizing the importance of information gathering, planning discovery, and defense strategies. The report aims to equip enterprises with the knowledge necessary to effectively prepare for and respond to DDoS attacks, ensuring their operational resilience against this pervasive threat.