Windows has containers?
With a standard windows server license you are only allowed to have a two hyperv virtual machines but unlimited "windows containers". The design is similar to Linux with namespaces bolted onto the main kernel so they don't provide any better security guaranies than Linux namespaces.
Very useful if you are packaging trusted software don't want to upgrade your windows server license.
Yes.
There are AppContainers. Those have existed for a while and are mostly targeted at developers intending to secure their legacy applications.
https://learn.microsoft.com/en-us/windows/win32/secauthz/app...
There's also Docker for Windows, with native Windows container support. This one is new-ish:
https://learn.microsoft.com/en-us/virtualization/windowscont...