Fog computing is a decentralized computing infrastructure in which data, compute, storage, and applications are located closer to the sources of data, such as Internet of Things (IoT) devices or edge computing devices, rather than relying solely on centralized cloud servers. This allows for faster processing and analysis of data, reduced latency, and improved efficiency in data transfer and storage. Fog computing can help address the limitations of cloud computing, such as bandwidth constraints and network latency, by enabling processing and storage closer to the edge of the network. It is particularly useful in scenarios where real-time data processing and analysis are critical, such as in smart cities, autonomous vehicles, and industrial IoT applications.