I need some clarification

Ok guys i need some clarification I am looking for Red Hat Advance Server is this the same as Red Hat Enterprise ? Can someone help me
Answer #1
I suggest you check for version comparison on redhat’s website
Answer #2
I suggest you check for version comparison on redhat's website
i checked on google and on wikipedia there is this list so i think advance server is different but there is like update 4 update 5 .. i am confused which one it actually it is