To import Web Deploy packages, you must also install the Microsoft Web Deploy package 4.0. The version 3.6 of this package does not work any more. The package can be downloaded from mic:

https://download.visualstudio.microsoft.com/download/pr/e1828da1-907a-46fe-a3cf-f3b9ea1c485c/035860f3c0d2bab0458e634685648385/webdeploy_amd64_en-us.msi

New: In the Server Role installation dialogue the "Management Service" must be installed to get IIS Web Deploy working. See also Internet Information Services.