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PLATO is the M3 mission in ESA’s Cosmic Vision programme and currently under development with a planned launch date in 2026. PLATO will search for exoplanets and perform their bulk characterisation with an unprecedented accuracy, focusing on Earth-size planets orbiting in the habitable zone of bright Sun-like stars. PLATO will use the transit method combined with the seismic analysis of the host star and with ground-based radial velocity measurements, to determine the planetary mass, radius, age, and orbital characteristics of the system. The detection and characterisation of small planets with long periods (> 1 month) pose a number of challenges on the satellite development and on the processing of the light curves. Likewise, ground-based radial-velocity measurements of long-period small planets require the most advanced instrumentation and observation strategies. And, in addition, an accurate determination of their planetary parameters can only be achieved by an enhanced knowledge of the host star characteristics, which involves new developments in asteroseismology and stellar modelling. To tackle these issues, the PLATO Mission Consortium has set-up an extended network of working groups that are devoted to the preparation of the operations and the scientific exploitation of the mission. PLATO is expected to have a major impact on the areas of exoplanet diversity, composition, evolution, architecture of planetary systems, and stellar modelling. PLATO will follow the exoplanet observatories CoRoT and Kepler/K2, and will operate in similar time frames to Gaia, TESS, CHEOPS, JWST, ESPRESSO/VLT, Roman Space Telescope, Ariel, and the ELT. The PLATO observing strategy will be defined considering the synergies with these facilities. This Conference aims at presenting the status of the PLATO mission to the community, both on the satellite development and scientific preparation, and at bringing experts working on observations and theory associated with any of the PLATO science objectives (for more information go to https://www.cosmos.esa.int/web/plato/ ).