The act, which is signed to Sony BMG, will roll out the to coincide with its new single 'Feels Just Like it Should', from the group's sixth album 'Dynamite'.
Additional sections will roll out over the next 12 months to support single and album launches and world tour schedules.
The site aims to offer a focal point for fans of Kay and the band. It currently offers news, digital downloads, and merchandise and fans can join the Jam Party People mailing list. Other features include links to a merchandise area selling music and memorabilia, mobile content and a forum.
The site was developed in collaboration between Sony BMG, Jamiroquai and agency Holler.
The digital download service was provided by 7 digital media, and Nasstar built the content management system.
James Kirkham, managing director at Holler, said: "We have created a site, which is intended to first attract users in through stunning animation and visual imagery, then retain them through a variety of mechanics designed to keep the user interested and returning on a regular basis."
Separately, Scottish rockers Franz Ferdinand have added an exclusive video diary to their recently relaunched site. Visitors to , developed by DS.Emotion, can check out videos, pictures and thoughts of the band during the recording of their new album.
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