This contract is for the provision of web services for the Copernicus Climate Change service (C3S) and the Copernicus Atmosphere Monitoring Service (CAMS) public websites and the Copernicus Health Hub (CHH) and Copernicus Energy Hub (CEH) websites. The work will be developed in close collaboration and coordination with the contractor for web management and graphic design, and under the guidance and leadership of the Copernicus Communication Team at ECMWF.