The E&P industry all over the world is awakening to the new technology discipline of Geomechanics, recognizing its importance in every operation of hydrocarbons exploitation, from drilling to production. There are specific applications in the early stage of exploitation, e.g. with respect to wellbore stability, sand production, hydraulic fracturing, traversing depleted zones, characterization of fractures and fault sealing capacity. In the later stages of production it can better characterize reservoir subsidence and fracture behavior with pressure evolution. A rigorous application of these methods can add important value to E&P projects. The need for innovative ways to solve the technology challenges planted the seeds of Geomechanics to germinate and grow as a key technology in E&P industry with applications for present and future projects. The vision for the future of this emerging discipline is bright with strong growth in applications. It is especially relevant to meet the challenges posed by many new discoveries, especially unconventional plays, which are often difficult to develop profitably. Geomechanics creates opportunities for improved and integrated project management. It can offer a variety of solutions by integrating conventional E&P technologies with cutting edge numerical, mathematical models that impacts the reservoir production behavior. Major operators were the first to embrace the scientific use of Geomechanics to help develop difficult reservoirs profitably. Also, a few medium-sized oil companies have recognized this potential and, as a consequence, have created Geomechanics teams with in. In this article, the authors provide a bird's eye view of Geomechanics as a core E&P technology supporting mega E&P projects. We discuss the current state of the art of this technology, with special emphasis on applications.