just found this post PKS Enterprise License and searched VMware Tanzu Kubernetes Grid Integrated Edition | VMware Tanzu Docs , however, I would like to clarify doubts about licenses before introducing this to my datacenter.
if choosing vSphere and NSX for the TKGI 1.8 greenfield deployment, then for the current design the TKGI does not require any license key? only the underlying VMware products(vSphere, i mean) need license.
