The objective of this deliverable is to present the activity done in the reporting period (February 2015 - March 2016) to operate and coordinate the common PRACE Operational services, foreseen by Task 6.1 of WP6 in PRACE-4IP project. The operation of the PRACE distributed HPC infrastructure involves the coordination of a set of services which integrate the Tier-0 systems and a number of national Tier-1 systems, providing services for Tier-0, in a “single” pan-european HPC infrastructure. This work is the continuation of the work done by Task 6.1 in the previous PRAC-IP projects to give continuity to the PRACE Operational services for the HPC Eco-system. Six Tier-0 systems are operational in the first year of the PRACE-4IP project period: JUQUEEN at GCS@FZJ; CURIE at GENCI@CEA; HAZELHEN at GCS@HLRS; SuperMUC at GCS@LRZ; FERMI at CINECA; MareNostrum at BSC Furthermore, operational support has been provided to 26 national Tier-1 systems which provide services for Tier-0 (i.e. used from SMEs for the SHAPE activity, or as stepping stone towards Tier-0 systems, or to prototype and asses new operational services). A new version of the PRACE Service Catalogue, which describes the PRACE common services, has been approved from the PRACE BoD in March 2015, just after the start of PRACE-4IP, and is guiding the operational activity. The Service Catalogue represents a living document and, as a result of the successful evaluation in the first year of PRACE 4IP, it will be revised during the second year of PRACE-4IP. In the process towards establishing a PRACE Quality of Service and quality control the work on PRACE Operational Key Performance Indicators is being addressed and the measurement of the KPIs and their evaluation will be implemented during the second period of the project. Based on the procedures for incident and change management the complete set of PRACE common services as defined in the Service Catalogue (Networking, Data, Compute, AAA and Security, User, Monitoring and Generic) have been operated and monitored on a day to day basis to assure continuity and integrity of the services. The Security Forum, responsible for all security related activities, is also coordinated by Task 6.1, with periodic teleconferences to monitor the infrastructure and prevent possible incidents which could cause vulnerability on the PRACE RI.