geOrchestra is a free, modular and secure Spatial Data Infrastructure software born in 2009 to meet the requirements of the INSPIRE directive in Europe. Initially covering Brittany, then France, geOrchestra now spreads worldwide with SDIs in Bolivia, Nicaragua, Switzerland and India. The presentation will go through the following subjects: * quick and precise description of the key features * where we come from and where we are going to * technical description of the software architecture (including SSO and security proxy) * from an infrastructure point of view, how we scale to handle the load (using Puppet and OpenStack) This talk is for anyone with an interest in SDIs, and "real world" SDI deployments.