An organization has decided to purchase a web-based email service from a third-party vendor and eliminate its own email server infrastructure. What type of cloud computing environment would BEST meet

Database as a Service (DBaaS) focuses specifically on providing managed database functionality, not a complete email service application.

Infrastructure as a Service (IaaS) provides virtualized computing resources like servers, storage, and networks, but the organization would still be responsible for installing and managing the email server software.

Software as a Service (SaaS) provides fully managed applications over the internet, where the provider handles all underlying infrastructure, platforms, and software maintenance. A web-based email service is a quintessential example of SaaS, as the organization consumes the application directly without managing any servers or software.

Platform as a Service (PaaS) offers a development and deployment environment, abstracting the underlying infrastructure, but the organization would still need to develop, deploy, and manage the email application on that platform.