VMware ESXi is a virtualization platform. Virtualization is the process of dividing the physical resources of a computer into virtual machines (VMs). These virtual machines can be run using the hardware resources on a computer.

ESXi is a virtualization platform developed by VMware. This platform can be used to run multiple virtual machines simultaneously. Virtual machines can be used to run different operating systems simultaneously. This allows a computer to run multiple operating systems.

ESXi is available in free and licensed versions. The free version offers limited features and is suitable for small businesses or home users. The licensed version offers more features and may be more suitable for large businesses or enterprise users.

ESXi is optimized for high performance and security. Virtual machines share physical computer resources, and ESXi provides automatic resource sharing and optimization to manage resources effectively. This helps in more efficient use of resources and better performance.