User CALS for cloud server

We are creating a cloud server for a customer who will be accessing it via a UNC path/mapping the path for them.  they will use Active Directory on the cloud server to authenticate them to the mapped drive or data path.  can someone confirm if User CALS are needed for this method of use?

the PC's themselves wont be domain joined to it but their will be active directory on their with a domain.  they also wont RDPing to it.
CRL ltdAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Shaun VermaakTechnical SpecialistCommented:
On what cloud?
CRL ltdAuthor Commented:
its going to be a hosted VPS cloud server 2016 with Fasthost
Shaun VermaakTechnical SpecialistCommented:
Yes, for each user
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.