End users, the largest group of cloud computing consumers, can easily access and use ___ products without much setup, whereas ___ products require extensive preparation by a much smaller group of more skilled network architects and administrators, who provide systems for their end users.
a. Saas (Software as a Service); laas (Infrastructure as a Service)
b. PaaS (Platform as a Service); XaaS (Anything as a Service or Everything as a Service)
c. Saas, Paas
d. XaaS, laaS