Hi @Rachid Harkaoui ,
Please note that the Microsoft Q&A is currently in English only.
As for the edition of your Windows Server 2016 it depends on your requirements, you can easily manage a small company of 30 users with a Standard edition. If you are planning on virtualizing and using virtual machines, then you need to plan well, as this will depend a lot on your Windows Server edition.
Windows Server 2016 Datacenter
This edition targets highly virtualized datacenter and cloud environments. Main characteristics include its support for unlimited Hyper-V containers or Operating System Environments (OSEs or virtual machines). It also supports an unlimited number of Windows Server containers and boasts features such Host Guardian Service, Storage Spaces Direct and Storage Replica, Shielded Virtual Machines (VMs), Networking stack and more.
Windows Server 2016 Standard
Used for physical servers or environments with minimal virtualized requirements. This edition supports two Hyper-V containers or Operating System Environments (OSEs or virtual machines) alongside the Host Guardian Service.
----------
(If the reply was helpful please don't forget to upvote or accept as answer, thank you)
Best regards,
Leon