What is a BigQuery slot?

As Google transitions to this new commercial model, they will no longer offer BigQuery's existing flat-rate slot reservation model Starting

We stay with on-demand despite being multiples of spend over the lowest fixed-slot reservation price as we've got very unpredictable query

bigquery slot reservation In the above image, there are 2 bigquery slot reservations The first reservation, autoscale-100-slots is assigned to project, hn-data-pipeline

bigquery slot pricing reservations; the lion's share of slots were allocated to critical automated pipelines Playing The Google Slot Machine This shift to flat