EBD was developed later...the first development was ABS...this was specifically developed for use on aircraft during landing n take off phase where there are chances of a skid specially in wet weather conditions / snow / extreme heat.
The problem with a normal anti lock braking mechanism (No EBD) was simply nothin else but the simple fact that ABS wud only ensure wheels not locking but it cudnt ensure not having a skid or relieve a skid. Imagine u have wheels that wont lock but u also try to swerve ur machine for an oncoming object in which case intertial forces take over...so now no matter if ur wheels wont lock ur in a sideways motion....u move the wheel in pro OR opposite skid directions but no luck...the intertial effects are keeping ur machine in a swerve.
At this point developers came up with the addition of an EBD....distributed force gives that cushion which is required to either not go into a skid or ease of coming out of one.....after introduction in the aviation industry it was introduced into formula one where it was appreciated as a feature which saved many lives...i guess the first road car to have it was the 96 S class Merc...if u guys remember it was heavily advertised as having a supreme stability feature and a prize for anyone who cud FLIP that car without an impact.
For more info u guys can just google it up im sure u'll find articles on it.
@Devils apprentice
Bro the term BA is the one u'll find with most manufacturers, however the term EBA is pretty much the same (just makes sense coz it IS an electronic feature). I guess suzuki refers to it as EBA...cheez tau aik hee hayna jigger.