UPDATE : Now Microsoft have fixed this issue I pointed out from the orginal post, you will now be safely redirected to http://www.microsoft.com/biztalk/solutions/soa/default.mspx ... nice one Microsoft and thanks for listening!
http://www.ibm.com/soa
http://www.bea.com/soa
http://www.sun.com/soa
http://www.oracle.com/soa
and now try ...
http://www.microsoft.com/soa
Not even a redirect! ... A big trick missed here.
This is just another demonstration of how the product teams and tech guys are building competition beating SOA products and we the punters just aren't hearing about it.
Come on Microsoft! Time to be bold and shout about it!