The vision of Digital Earth was proposed by Al Gore in 1998 as a multi-dimensional and multi-resolution model of the planet to contextualize the huge amount of spatial information relating to the physical and socio-economic environment.Every day humans generate 2.5 trillion 1018 bytes of data: 80% of them are spatial data acquired from fixed and mobile in-situ sensors, on satellites, aircrafts, UAVs or land vehicles, digital documents and social media.Such a massive flow generates new challenges since stored data have to be analyzed and processed to extract information, both in real-time and off-line.Therefore a new scientific and technical figure who combines expertizes of Computer Science, Environmental Engineering and Geomatics is needed.