ESA will be both a provider of data to SPIN and, as the primary client, the first recipient of data, information and reports from SPIN. ESA will be kept abreast of developments and achievements within the SPIN project through monthly reports, progress and status reports, face-to-face meetings, teleconferences and/or videoconferences, and document deliverables. The communication plan (see Section 4), details how this interface shall be organised. The Science Leader (Michel Van Roozendael) shall be the main contact person for all technical and scientific issues. The Project Manager (Greg Bodeker) shall be the interface for ESA regarding programmatic and managerial aspects. The Contract Officer (Etienne Ladrière) shall manage the contractual and administrative aspects with ESA.