Which of the following cloud computing services requires the MOST involvement from a company’s in-house
staff?

A.
IaaS

B.
MaaS

C.
PaaS

D.
SaaS

Explanation:
Infrastructure as a service (IaaS) is an instant computing infrastructure, provisioned and managed over the
Internet. Quickly scale up and down with demand, and pay only for what you use.
IaaS helps you avoid the expense and complexity of buying and managing your own physical servers and other
datacenter infrastructure. Each resource is offered as a separate service component, and you only need to rent
a particular one for as long as you need it. The cloud computing service provider manages the infrastructure,
while you purchase, install, configure, and manage your own software—operating systems, middleware, and
applications.
https://azure.microsoft.com/en-us/overview/what-is-iaas/