Mikaela's company is considering purchasing a web-based email service from a vendor and eliminating its own email server environment as a cost-saving measure. What type of cloud computing environment is Mikaela's company considering?

This is an example of a vendor offering a fully functional application as a web-based service. Therefore, it fits under the definition of software as a service (SaaS). In infrastructure as a service (IaaS), compute as a service (CaaS), and platform as a service (PaaS), the customer provides their own software.