Good day,
I saw that the sql server express 2005 can be used for commercial purpose without buying additional license
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/8df18025-fc2b-43c2-8476-532336ff09e3/sql-server-express-for-commercial-use?forum=sqlexpress

the question is can I do the same for sql server express 2008,2012, and 2014?
can I install and use sql server express 2008, 2012 and 2014 on an azure vm? specifically
http://azure.microsoft.com/en-us/pricing/details/virtual-machines/
A0 instance

just an off topic question, is it required to pay to use sql server on virtual machines?
why is there a different pricing here
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