Gamma-Ray Bursts as seen by the Fermi Gamma-Ray Space Telescope

The Large Area Telescope (LAT) instrument on the Fermi mission is revealing the rich spectral and temporal gamma‐ray burst phenomena in the >100 MeV band. The synergy with Fermi’s GBM detectors links these observations to those in the well‐explored 10–1000 keV range; the addition of the >100 MeV band observations brings new hint and new information about burst emission in both the prompt and afterglow phases. In this contribution we describe the prospects for the Fermi Large Area Telescope (LAT) in observing Gamma‐Ray Bursts (GRBs), and some preliminary results. Here we focus our attention on the importance of multi frequencies approach to GRB science during the just began Fermi era.