An Offering is the thing a customer sees and books, for example "Padel court", "Men's haircut", or "Meeting room". Behind the scenes, an Offering is a pool of candidate Bookables and/or Bundles. When a customer books, ReserveBee assigns the first available one for them, in priority order.
This means you can offer "a padel court" as one option, with three actual courts behind it, without customers having to pick which physical court they get.
An Offering also owns its Variants, the durations and prices customers choose from, and controls whether it shows up on the booking page at all.