The Vodafone Derby (Eng-I) winner swept to the front with a quarter-mile left and tenaciously held off King George VI and Queen Elizabeth Stakes (Eng-I) victor Dylan Thomas to win by a length.
Defending Juddmonte International winner, Notnowcato, finished third, three lengths behind Dylan Thomas.
As expected, long shot Song of Hiawatha acted as a pacemaker, leading the field along at a good clip during the early stages of the race. Notnowcato and Duke of Marmalade sat just off the pace, with Authorized and Dylan Thomas running in fifth and sixth, respectively.
Jockey Ryan Moore and Notnowcato took command with three furlongs left, as Song of Hiawatha began to fade. Frankie Dettori had Authorized ready to pounce, and the duo rolled up to challenge the leader two furlongs out.
Authorized showed an impressive turn of foot to when asked to run by Dettori, and the son of Montjeu easily left Notnowcato behind. Dylan Thomas, under a strong ride by Johnny Murtagh, powered into second place, but could never quite get to the winner.
Winning time for the ten furlongs was 2:11.82.
Peter Chapple-Hyam trains the 3-year-old colt for co-owners Saleh Al Homeizi and Imad Al Sagar. The partners lease Authorized from Sheikh Mohammed, who purchased the colt's breeding rights earlier this year.
Authorized is the first foal from the unraced Saumarez mare, Funsie. His strong female family has also produced leading sire Green Dancer.