Link: https://www.universetoday.com/articles/get-ready-for-the-rubin-observatorys-deluge-of-discoveries

Managing this massive amount of data is a critical part of the VRO. The dense data stream flows through purpose-built fiber optic cables from the observatory to Santiago, Chile's capital city. From there it travels to Miami, Florida, then flows through existing high-speed infrastructure to the Rubin Observatory United States Data Facility (USDF) at SLAC National Accelerator Laboratory in California. Finally, the data flows through a dedicated, encrypted network to a United States Intelligence Community facility in California.

The data is turned into useful science products at the USDF. There, an automated system filters the images and generates alerts. Images of the events are available to scientists after only 60 seconds, while more complete images are released 80 hours later. The 80-hour delay allows orbiting satellites to be removed from the images.

also see https://www.theverge.com/science/887037/vera-c-rubin-observatory-800000-alerts