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2.1.3 Cloud Computing

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The National Institute of Standard and Technology (NIST) defines cloud computing as “a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources” [17]. Cloud computing is considered as a new business model throughout the world, computing as a utility [18]; there are five essential characteristics of the cloud: (i) on-demand self-service, (ii) resource pooling, (iii) rapid expansion, (iv) broad network access, and (v) measured service. Furthermore, cloud computing has three service models [19] for cloud users, such as software, platform, and infrastructure. In the same manner, Forensics-as-a-Service is the emerging technology in the area of cloud computing that facilitates investigators to perform digital crime investigation tasks utilizing the services of the cloud. Cloud categorizes four distinct deployment models, public, private, commercial, and hybrid models, a proper way to deliver cloud services to cloud users. In cloud computing, this is intended to serve as a way of making broad comparisons of cloud deployment strategies, services models, and describing the actual baseline [20], for using cloud computing in the best manner.

Security Issues and Privacy Concerns in Industry 4.0 Applications

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