An application server, which uses a SaaS fax provider, is determined to cost too much money. An upgrade to the application allows for use of a physical fax card so the company only has to pay for a…

A virtual-to-physical migration specifically handles transitioning workloads from virtual or cloud-hosted environments to physical hardware, which directly matches replacing a SaaS fax provider with a locally installed physical fax card. This migration type is the most efficient because it is purpose-built for this direction of transition and can be performed with minimal service interruption to the production application. V2P preserves application functionality while shifting the hosting model from cloud to on-premises physical infrastructure.

Storage migration moves data between storage systems and does not address the application-layer transition from a cloud SaaS service to on-premises physical hardware.

Cloud migration moves workloads into a cloud environment, which is the opposite direction of this scenario - the company is migrating away from a SaaS cloud service to physical on-premises hardware.

Offline migration requires taking the system fully offline during the transition, which directly conflicts with the requirement to minimize downtime for this production application.