Emerson has decided to implement a new business management system. What are three advantages of choosing a cloud$-$based custom option such as a platform as a service $($PaaS$)$ or an infrastructure as a service $($IaaS$)$ system, over an on$-$premises option?

Multiple select question.

More secure from hackers

Storage size can be quickly scaled to meet changing needs

Reduces the need for a large IT staff

Greater control over costs and the implementation of changes