The BBC appointed agency Graphico to redesign the following a five-way pitch for the account.
To be launched in June, the redesigned site will highlight the benefits of broadband and showcase BBC audio and video material available for those witha high-speed connection.
Tab links to bbc.co.uk will allow users to search for content by genre or channel and look at clips, video blogs and material rated by users. The new site will promote material that is also available for mobile phones and link to relevant external sites.
Third-party business partners will also be able to access an extranet, which will provide real-time data on audience consumption of BBC broadband content.
Angel Gambino, controller business development and emerging platforms, said: "Broadband is no longer an emerging platform. User take-up shows that broadband has already emerged and it is fast outstripping narrowband."
She added: "We wanted to develop a site that acknowledged the increasing maturity and sophistication of the medium, as well as showcasing the wealth of BBC content that is already available."
The BBC has also relaunched bbc.co.uk/mobile to provide mobile users with clearer navigation.
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