This Exchange TechNet Wiki page explains the Microsoft support lifecycle for the Exchange Server application, Windows Server operating system, Office, and client operating system family products.

 

Understand microsoft support lifecycle allow you to know when the product is "end of life support" and Microsoft will only provide limited support afterwards.  This will prevent " What does it mean my version is no longer supported? "

Common reason WHY upgrade:

Refreshing new appearance, continuous security protection update, better performance,  more add-on feature, microsoft supported, user friendly, productive and many more reason you can feel it, when you try it.


Exchange Family Product
Products Released Availability
Date		 Mainstream
Support
Retired		 Extended
Support
Retired
Exchange 2000 Conferencing Server 29/11/2000 12/1/2010 13/1/2015
Exchange 2000 Enterprise Server 29/11/2000 31/12/2005 11/1/2011
Exchange 2000 Server Standard Edition 29/11/2000 31/12/2005 11/1/2011
Exchange Server 2003 Enterprise Edition 28/9/2003 14/4/2009 8/4/2014
Exchange Server 2003 Standard Edition 28/9/2003 14/4/2009 8/4/2014
Exchange Server 2007 Enterprise Edition 8/3/2007 10/4/2012 11/4/2017
Exchange Server 2007 Standard Edition 8/3/2007 10/4/2012 11/4/2017
Exchange Server 2010 Enterprise 9/11/2009 13/1/2015 14/1/2020
Exchange Server 2010 Standard 9/11/2009 13/1/2015 14/1/2020

OS Family Product
Products Released Availability
Date		 Mainstream
Support
Retired		 Extended
Support
Retired
Windows 2000 Server 31/3/2000 30/6/2005 13/7/2010
Windows Server 2003 R2 Datacenter Edition (32-Bit x86) 5/3/2006 13/7/2010 14/7/2015
Windows Server 2003 R2 Datacenter x64 Edition 5/3/2006 13/7/2010 14/7/2015
Windows Server 2003 R2 Enterprise Edition (32-Bit x86) 5/3/2006 13/7/2010 14/7/2015
Windows Server 2003 R2 Enterprise x64 Edition 5/3/2006 13/7/2010 14/7/2015
Windows Server 2003 R2 Standard Edition (32-bit x86) 5/3/2006 13/7/2010 14/7/2015
Windows Server 2003 R2 Standard x64 Edition 5/3/2006 13/7/2010 14/7/2015
Windows Server 2008 Datacenter 6/5/2008 9/7/2013 10/7/2018
Windows Server 2008 Datacenter without Hyper-V 6/5/2008 9/7/2013 10/7/2018
Windows Server 2008 Enterprise 6/5/2008 9/7/2013 10/7/2018
Windows Server 2008 Enterprise without Hyper-V 6/5/2008 9/7/2013 10/7/2018
Windows Server 2008 for Itanium-Based Systems 6/5/2008 9/7/2013 10/7/2018
Windows Server 2008 Foundation 21/5/2009 9/7/2013 10/7/2018
Windows Server 2008 Standard 6/5/2008 9/7/2013 10/7/2018
Windows Server 2008 Standard without Hyper-V 6/5/2008 9/7/2013 10/7/2018
Windows Web Server 2008 6/5/2008 9/7/2013 10/7/2018

Office Family Product
Products Released Availability
Date		 Mainstream
Support
Retired		 Extended
Support
Retired
Office 2000 Developer Edition 7/6/1999 30/6/2004 14/7/2009
Office 2000 Premium Edition 27/6/1999 30/6/2004 14/7/2009
Office 2000 Professional Edition 27/6/1999 30/6/2004 14/7/2009
Office 2000 Small Business Edition 27/6/1999 30/6/2004 14/7/2009
Office 2000 Standard Edition 27/6/1999 30/6/2004 14/7/2009
Office Basic Edition 2003 17/11/2003 14/4/2009 8/4/2014
Office Professional Edition 2003 17/11/2003 14/4/2009 8/4/2014
Office Professional Enterprise Edition 2003 17/11/2003 14/4/2009 8/4/2014
Office Small Business Edition 2003 17/11/2003 14/4/2009 8/4/2014
Office Standard Edition 2003 20/11/2003 14/4/2009 8/4/2014
Office Student and Teacher Edition 2003 17/11/2003 14/4/2009 8/4/2014
Home and Student 2007 27/1/2007 10/4/2012 11/4/2017
Office Basic 2007 27/1/2007 10/4/2012 11/4/2017
Office Enterprise 2007 27/1/2007 10/4/2012 11/4/2017
Office Professional 2007 27/1/2007 10/4/2012 11/4/2017
Office Professional Plus 2007 27/1/2007 10/4/2012 11/4/2017
Office Standard 2007 27/1/2007 10/4/2012 11/4/2017
Ultimate 2007 27/1/2007 10/4/2012 11/4/2017
Office 2010 15/7/2010 13/10/2015 13/10/2020

Client OS Product
Products Released Availability
Date		 Mainstream
Support
Retired		 Extended
Support
Retired
Windows XP 31/12/2001 14/4/2009 8/4/2014
Windows Vista 25/1/2007 10/4/2012 11/4/2017
Windows 7 22/10/2009 13/1/2015 14/1/2020