I want to know a comparison between ARIS Business Designer and Visio??
Hello Siddharta,
well, it's like comparing a printed photo album with an immersive virtual reality 3D environment.
You need not take my word for it, see what others have said: http://scn.sap.com/thread/657267
That thread contains some key differences in a more qualified manner than my metaphor. Keep in mind the SAP integration mentioned there is a feature that needs extra licensing. If you disregard that, you get a good impression, what the difference is. Although that thread is very old, the statements are still valid.
You might also consult Google about "ARIS vs Visio" to find a lot of opinions.
Regards, M. Zschuckelt