Cloud computing has significantly advanced the field of video surveillance, bringing about transformative changes in security. According to the first ministerial-level cloud computing plan released by the Ministry of Science and Technology, the "12th Five-Year Plan for China’s Cloud Technology Development" highlighted that during the 2011–2015 period, the domestic cloud computing industry was expected to grow from 750 billion yuan to over one trillion yuan. This massive market potential has become a strong foundation for continued growth. The integration of cloud computing with video surveillance has addressed long-standing challenges related to storage and intelligent data analysis. As video surveillance becomes more widespread across sectors like security, transportation, healthcare, and logistics, the need for efficient processing and storage solutions has grown. Cloud computing and cloud storage have emerged as key enablers of big data processing, offering scalable and flexible platforms for handling large volumes of video data. Moreover, video surveillance systems are now closely connected with the Internet of Things (IoT), forming a three-tier architecture: sensor monitoring, network connectivity, and application layers. In the future, video surveillance will play a central role in the IoT ecosystem. With the expansion of global camera networks and the rise of high-definition imaging, the demand for cloud-based storage, computing, and search technologies is set to increase dramatically. By leveraging big data processing techniques, video resources from global surveillance systems can be treated as valuable data assets. Through cloud platforms, not only is video data processed efficiently, but intelligent analysis is also performed, enabling comprehensive data services. These capabilities allow for seamless integration with IoT technologies, opening up new possibilities for smart applications. In terms of security development, cloud computing has driven the evolution of security technology toward simulation, digitization, networking, and intelligence. The shift from decentralized, non-networked systems to centralized data-driven models has made cloud storage an essential tool. For instance, in projects like the Safe City initiative, the demand for advanced monitoring and networking has pushed manufacturers to enhance the network capabilities of devices such as DVRs, NVRs, NASs, and SANs. High-definition video also brings significant storage challenges due to its large file sizes. Traditional storage methods struggle to keep up, but cloud-based storage solutions offer a breakthrough. By integrating various storage devices into a unified network, cloud technology enables greater scalability and performance, making large-scale storage more feasible. This integration reduces the costs associated with monitoring equipment and improves resource sharing, data transmission efficiency, and overall security. It also supports better management of large-scale video data, which is crucial for city-wide security systems. Additionally, cloud computing enhances intelligent video analysis. In large-scale systems like Safe City, manual monitoring is no longer sufficient. While current intelligent analysis tools face limitations in maturity and efficiency, cloud computing offers a solution by allowing back-end processing through idle network nodes. This approach reduces hardware requirements while improving analytical performance. In conclusion, cloud computing is not just a technological advancement but also a business model that supports both large-scale industries and individual users. It plays a vital role in managing the increasing demands of high-definition and smart systems. As a foundational technology, it paves the way for the future of the security industry, making it an essential component of modern safety infrastructure.

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