Rubin Observatory LSST as a large-scale photometric variability survey

The Legacy Survey of Space and Time (LSST), the first project to be undertaken at the new Vera C. Rubin Observatory, will be the most comprehensive optical astronomical sky survey ever undertaken. Starting later this year, Rubin Observatory will obtain panoramic images in ugrizy passbands covering the sky visible from its location in Chile every clear night for tenyears, resulting in about 800 observations of each location across half of the celestial sphere. About 20 billion galaxies and a similar number of stars will be detected using this 60 petabyte image dataset. LSST data will be used for investigations ranging from cataloging potentially hazardous near-Earth asteroids, to stellar and black hole astrophysics, and fundamental physicssuch as the characterization of dark matter and dark energy. I will overview scientific goals behind this project and then discuss tools and plans relevant for time-domain science with LSST data.