Which of the following statements best describes the concept of Internet of Things?

The Internet of Things refers to the interconnection of physical devices through the internet or other networks. These devices may include sensors, machines, vehicles, equipment, cameras, smart appliances, and industrial devices that collect and exchange data. Option B describes cloud or internet-based service delivery more broadly. Option C describes bring-your-own-device practices. Option D describes electronic data interchange, where business documents are exchanged electronically between trading partners. Internal auditors reviewing IoT environments should evaluate device inventory, authentication, network segmentation, patching, data integrity, privacy, monitoring, and incident response. IoT can improve real-time monitoring and automation, but it also expands the attack surface. Therefore, Option A is correct.