Learn in the textbookFundamental Concepts of IoT and Embedded Systems
DefinitionA cloud service (クラウドサービス) lets users rent only as much as they need of the IT resources, such as servers and software, that a provider offers over the internet.
ExplanationIn IoT, it is often where the large volumes of data arriving from many devices are stored and analyzed. Users do not have to own the equipment, and they usually pay according to how much they use.
AnalogyLike paying the power company for the electricity you use instead of keeping a generator at home, the owner of the equipment and the person using it are different.
Memory hookThe name comes from the habit of drawing the internet as a cloud in network diagrams.