Royal officials say www.officialroyalwedding2011.org will be updated regularly with photos, links and videos.
The palace claims the website will also have information on some of the most coveted details like specifics on Kate Middleton's dress. St. James' Palace also said the site may be used to livestream the wedding itself.
The palace said the site was being hosted by Google App Engine, which is designed to handle large bursts of traffic.
The government has also launched a separate site intended to offer practical information for members of the public interested in taking part in celebrations for the wedding.
Meantime, singer Elton John has confirmed that he and his partner David Furnish received an invitation and are planning to attend the wedding. Prince William and Middleton will marry April 29 at Westminster Abbey.
Palace officials said the coveted invitations have been sent to about 1,900 guests.
John was a close friend of Prince William's mother, Princess Diana. He sang his song "Candle in the Wind" at her funeral in 1997.
The Associated Press contributed to this report.