A team of 13 new London writers aged between 17 and 22 created and wrote the online drama - called EastEnders: E20.
The new show will go live in January 2010 in the run-up to EastEnders celebrating its 25th anniversary on February 19. Episodes will be posted on the EastEnders website after 'EastEnders' TV episodes and will last between six and 12 minutes
The web-based series will follow four new teenage characters, whose casting is yet to be announced, who arrive in Albert Square, each searching for an escape from their regular lives.
Those behind the new show said storylines will stand alone so that they can be enjoyed by viewers who don't normally watch EastEnders.
"Crossover treats" are also promised for regular fans, both in the web series and the popular BBC1 soap.
EastEnders executive producer Diederick Santer said: "These talented writers are creating a whole new Walford, infused with their own experiences of London life.
"A fresh perspective on a British classic, EastEnders: E20 will - I hope - delight new audiences and EastEnders diehards alike."
EastEnders: E20 will be available at bbc.co.uk/eastenders in January 2010.