Alternatives for Microsoft IT infrastructure services...

Hey Tribe!

I was just wondering, what do other rival companies use in their organizations to manage users / access / apps etc.. Do they have any alternatives to Windows Server (Active directory, file servers, group policies, etc..)?

In short, what other alternative do Google and Apple use in their own organizations to these?

  1. Microsoft Office (Word, Excel, Outlook, Lync etc.)
  2. Server OS (Windows Server to manage Domain / Active directory services)
  3. Client machine OS (Windows)
  4. SharePoint (Intranet, document management etc..)
  5. Dynamics and Microsoft BI
  6. Email (Microsoft Exchange)

Are there any employees of Google and Apple among us? :)