1. Introduction
2. The spacecraft and telescope
2.1. The spacecraft
2.2. The telescope
2.3. Pointing angles
2.4. Orbit and operation mode
2.5. Transits and visibility
3. The instruments
3.1. VIS instrument
3.2. NISP instrument
3.3. The Euclid joint field of view
4. Observing and dithering sequences
4.1. The reference observation sequence (ROS)
4.2. The dithering strategy
5. The EWS region of interest
5.1. Environment models
5.2. The Euclid Region of Interest
5.3. Limiting surface brightness
5.4. Expected number of sources
5.5. The EWS coverage by ground-based telescopes
6. Calibration and Deep Field observations
6.1. Telescope and instrument calibrations
6.2. Euclid Deep Fields and Euclid Auxiliary Fields
6.3. Computing the stage-1 schedule
7. Computing the Euclid Wide Survey
7.1. Early explorations
7.2. Introducing ECTile’s stage-2
7.3. Major constraints for the EWS
7.4. From EWS tessellation to patches
7.5. Scheduling patches
7.6. Placing patches
8. The Euclid reference survey definition
8.1. Survey performance
8.2. Unallocated time
8.3. Euclid footprint area
9. Summary