VMware Host Client는 vCenter Server 시스템에 연결되지 않은 개별 ESXi 호스트를 관리할 때 사용할 수 있는 웹 기반 애플리케이션
vSphere Web Client는 폐기
Goodbye, vSphere Web Client! - VMware vSphere Blog
VMware plans to deprecate the Flash-based vSphere Web Client with the next numbered release (not update release) of vSphere. The next version of vSphere will be the terminal release for which vSphere Web Client will be available.
https://blogs.vmware.com/vsphere/2017/08/goodbye-vsphere-web-client.html
