@pmoncho Hey

Requirements
70 Computers usage (Outlook, Sharepoint, Legal web app, MS Office and internet browsing)
2 Network Printers
VM1 - Active Directory Domain Controller, DNS and DHCP
VM2 - SharePoint
VM3 - Web Host
VM4 - CDMS (Customer Database Management System)
(Maybe 2-3 VM for other stuff, yet to be determine)

Hardware: (Still deciding on which tower to get..)
Tower Server

Dell

PowerEdge T440 Tower Server
PowerEdge T430 Tower Server

HPE

ProLiant ML30 Gen9 Server
ProLiant ML110 Gen10 Server

1. On these VM's which Server OS will best suite?

I am new to this server building, so have i missed anything here?

@RojoLoco yes i was busy researching and just sorting out the plan..

How about this..

Requirements
70 Computers usage (Outlook, Sharepoint, Legal web app, MS Office and internet browsing)
2 Network Printers
VM1 - Active Directory Domain Controller, DNS and DHCP
VM2 - SharePoint
VM3 - Web Host
VM4 - CDMS (Customer Database Management System)
(Maybe 2-3 VM for other stuff, yet to be determine)

Hardware:
Tower Server

Dell

PowerEdge T440 Tower Server
PowerEdge T430 Tower Server

HPE

ProLiant ML30 Gen9 Server
ProLiant ML110 Gen10 Server

On these VM's which Server OS will best suite?

@Dashrender lol sorry kind of spoke without researching on that point.

@JasGOt Hi Thanks for the reply and your recommendations, sorry for the delayed response. Had to research more on 'our requirements' vs what 'we think we need' rather 'what we do need' As you were knew from the Post i am new to this.

About G Suite Sync for Microsoft Outlook 4.0.16.0 we have here.
Setting the mailbox size to 1GB and getting them to use Gmail for older emails. Than will raise it according depending on user needs. This has fix most Outlook Syncing from Gsuite issues here.

The below KB help to clearing identify what wont sync..

https://support.google.com/a/answer/6209363

This statement from the vendor was surprising 'We are strongly advice to use the web interface and not 3rd party apps to connect to our mail services.'

Just sharing on what i found and fix here. Thank again.

This is a Legal Firm, with currently 40 networked users -> 70 users future up scale.

Now everything is on Gsuite, sync between Gmail and Outlook is a nightmare. So we going to have a Local Domain as Mail Server.

I am in midst doing a server proposal.

We need AD and share point = Server A, Server B File Server (Heavy usage due to Documents and archives) (File Share back up to Cloud) Which cloud service should I Use? Web Hosting and one to for Client Database Management. Server C (Can the web hosting and Client database management system be on one Server?)

I am leaning to Floor Standing Server Rack (foresee future need to add storage), Intel Xeon processors,

File Server OS will be Windows Server.

Server Brand, Family Model and Server OS (security has to be top notch no opensource please )?

Any help will be appreciated