String/Gauge Duality and Soft--Hard Pomeron

We provide a brief review for the motivation of Maldecena duality conjecture, leading to the calculation for the glueball spectrum and the Pomeron intercept in the strong coupling limit. We next turns to the question of hard scattering. Using Maldacena's gauge/string duality, a unified description is provided for both the soft and the hard Pomeron in the strong coupling limit.