Server Core installations are versatile, secure and highly-optimized installations of Windows Server. Dubbed ‘Windows without Windows’ by some, these installation in Windows Server 2008 R2 are capable of providing more (infrastructural) services than ever! The table below shows individual roles and features in fresh Server Core installations of Windows Server 2008 R2, Web (column 1), Standard (column 2), Enterprise (column 3) and Datacenter (column 4) edition. It also lists Server Roles features in a fresh installation of the special-purpose Hyper-V server 2008 R2. (column 5).
red, unavailable green, available for installation gray, installed by default :

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