Fog computing is a decentralized computing infrastructure in which data, computation, storage, and applications are located closer to users, businesses, and industry. It extends cloud computing to the edge of the network, enabling quicker data processing and analysis by reducing the distance that data needs to travel. This technology aims to improve overall efficiency, reduce latency, and enhance user experience in various applications such as Internet of Things (IoT), big data analytics, and smart cities. Fog computing also offers advantages such as higher security and privacy, improved reliability, and increased scalability compared to traditional cloud computing approaches.