[Portal] Aggregates presentation-oriented markup fragments (HTML, WML, VoiceXML, etc.) [Mashup] Can operate on pure XML content and also on presentation-oriented content (e.g., HTML) [0] 
Content dependencies
C l a s s i f i c a t i o n
P h i l o s o p h y / a p p r o a c h
C o n t e n t d e p e n d e n c i e s
L o c a t i o n d e p e n d e n c i e s
A g g r e g a t i o n s t y l e
E v e n t m o d e l
R e l e v a n t s t a n d a r d s