Sirius Corporation has adopted a cloud$-$based service. As this service provides hardware and operating systems, Sirius Corporation can easily install its software on this cloud product. Which of the following services has the company taken advantage of from its cloud vendor? A$)$ platform as a service $($PaaS$)$ B$)$ software as a service $($SaaS$)$ C$)$ unified communications as a service $($UCaaS$)$ D$)$ infrastructure as a service $($laaS$)$