选择题：Cloud computing is a type of Internetbased computing that provides shared computer pro

Cloud computing is a type of Internetbased computing that provides shared computer processing resources and data to computers and other devices on demand. Advocates claim that cloud computing allows companies to avoid upfront infrastructure costs. Cloud computing now has few service form, but it is not including()

AIaaS

B.PaaS

C.SaaS

D.DaaS