ESA Earth Observation Multi-Mission User Services provide ESA customers with services to access to ESA and ESA-hosted Third party Mission Data. These are currently provided by Web information pages, Helpdesk, Catalogue, On-demand Ordering. The objective of this Phase is to develop a pre-operational demonstrator of the revised User Service Data Access service portfolio, that demonstrates some of the functionalities that were specified and approved in the Phase A of this project (as described in the System Requirements Document and the Architecture Deliverable Document).