Understanding Earth systemic processes is critically important to support a safe and sustainable modern society. Volcanic eruptions, earthquakes, floods, landslides, tsunamis, weather, and global climate change are all Earth phenomena impacting citizens life and the way governments and nations are organized and managed. Accessing data and information describing such phenomena is not trivial due to the a) scattered nature of infrastructures providing access to the data and b) heterogeneity of data, protocols and methods used to obtain, analyse and process data [Bailo D. and Jeffery K.G., 2014]. In this context, EPOS1 (European Plate Observing System) intend to provide a substantial contribution by facilitating the process of obtaining and integrating data, data products, services and software (DDSS) for Solid Earth science generated and provided by monitoring networks, observing systems and facilities belonging to European countries. EPOS will bring together Earth scientists, national research infrastructures, ICT (Information & Communication Technology) experts, decision makers, and general public to develop new concepts and tools for accurate, durable, and sustainable answers to societal questions concerning geohazards and those geodynamic phenomena (including geo-resources) relevant to the environment and human welfare. DDSS provided by more than 200 Research Infrastructures will be integrated under a central, single but distributed Infrastructure – the so called Integrated Core Services – by establishing an e-platform where access, use and reuse of heterogeneous data (in terms of format, metadata and accessibility) and associated software, services and resources is easy and transparent. EPOS will use new e-science opportunities to create a pan-European infrastructure for Solid Earth science that will support a safe, innovative and sustainable society. EPOS project has been coordinated since the beginning by INGV. The EPOS Implementation Phase (IP) started in 2014 following the completion of the Preparatory Phase (2010-2014). Running until 2019, EPOSIP it has two major milestones. Firstly, the Implementation Phase project2 which is funded under the European Commission’s Horizon 2020 programme and which runs from 2015 to 2019. Secondly, the establishment of the EPOS European Research Infrastructure Consortium (ERIC) which will see EPOS becoming a legal entity3. Key objectives of the Implementation Phase project are: implementing Thematic Core Services (TCS), the domain-specific service hubs for coordinating and harmonizing national resources/plans with the European dimension of EPOS; building the Integrated Core Services (ICS) to provide a novel research platform to different stakeholders; designing the access to distributed computational resources (ICS-D); ensuring sustainability and governance of TCS and EPOS-ERIC. The research infrastructures (RIs) that EPOS is coordinating include: i) distributed geophysical observing systems (seismological and geodetic networks); ii) local observatories (including geomagnetic, near-fault and volcano observatories); iii) analytical and experimental laboratories; iv) integrated satellite data and geological information services; v) new services for natural and anthropogenic hazards; vi) access to geoenergy test beds. In this context, the purpose of this report is to provide a description of the EPOS technical infrastructure as a whole, and introduce the reader to the technical details and procedures required to achieve the integration between data providers and EPOS main platform. Readers can find an explanation of the several acronyms in the appendix at the end of this work.