The Sardinia Radio Telescope (SRT, Lat. 39.4930N - Long. 9.2451E) is a major radio astronomical facility ready for outstanding scientific observations, with its main parabola of 64 meter diameter.It represents a flexible instrument for Radio Astronomy, Geodynamical studies and Space science, either in single dish or VLBI mode. SRT combines one of the largest steerable collecting area all over the World with state-of-the-art technology to enable high efficiency up to the 3-mm frequency band. The optical system is based on a quasi-Gregorian dish antenna with mirrors shaped to minimize the standing wave bouncing between the two reflectors. Three additional mirrors, combined in a Beam Wave Guide (BWG) configuration, increase the number of focal positions.The manufacturing of the SRT mechanical parts and their assembly on-site was commissioned in 2003 to the company MTM® (Germany). The final tests and acceptance of the instrument have been performed in August 2012. In 2016 a full Science Verification Phase was successfully concluded. During 2017 and early 2018 a refurbishing of the active surface was carried out and finally the telescope was first offered for the astronomical community in September 2018, starting regular operations.