VMware vCenter Converter is a tool by VMware that's used to import a physical or virtual machine into the vSphere environment. Conversion from P2V can be considered if the network has some old physical machines or physical machines with specific applications that require a long time for a fresh installation, and an excessive downtime period is not tolerated.
More information on this is available in the VMware vCenter Converter Standalone User's Guide (https://docs.vmware.com/en/vCenter-Converter-Standalone/6.2/convsa_62_guide.pdf).