Complex sentence: The 2X Remote Application Server core components (2X Publishing Agent and 2X SecureClientGateway) should be installed on Windows 2003, Windows 2008, Windows 2008 R2 and Windows 2012 Server operating system.
Split into simpler sentences: The 2X Remote Application Server core components are 2X Publishing Agent and 2X SecureClientGateway. It should be installed on Windows 2003, Windows 2008, Windows 2008 R2 and Windows 2012 Server operating system.