Google Apps are an example of$\_\_\_\_\_\_\_\_.$

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Part $1$

A$.$

infrastructure as a service$($IaaS$)$

B$.$

software as a service$($SaaS$)$

C$.$

platform as a service$($PaaS$)$

D$.$

platform as a product$($PaaP$)$

E$.$

software as a product$($SaaP$)$