ESO, Garching, Germany, 16–19 September 2019
At the turn of this decade, a number of moderate-sized telescopes were equipped with digital cameras of around 10 square degrees. The relative cost of detectors and computing had reduced to a level where rapid, real-time processing of the imaging data provided monitoring of large sky areas every few days. This revolutionised the field of time domain astronomical surveys and we have witnessed a vast array of new discoveries. The global community have mapped the solar system, star forming regions in our galaxy, local group galaxies, and the local and high-redshift Universe leading to the discovery of new types of transients. We have discovered low luminosity stellar explosions in nearby galaxies and the most luminous supernovae beyond a redshift of 3, exotic transients in the nuclei of galaxies including tidal disruption events, stellar mergers, unusual novae and previously unknown species of stellar outbursts. The diversity in the explosive Universe is remarkable.