A supervisor requires a bit more control over how updates and patching are handled at both the hardware and software levels. The supervisor suggested that patches need testing before being applied to the Content Relationship Management' $($CRM$)$ software production environment. However. Capital Expenses $($CapEx$)$ need to be limited$.$ The CRM provider sells a service that meets these requirements. What type of business model do they have?

Select one:

Software$-$as$-$a$-$Service

Virtualization

Redundancy and High Availability

Infrastructure$-$as$-$a$-$Service