The 'Single Source of Truth'
Parity means that if you have 10 seats, and 1 is sold on Viator, only 9 should be visible on your website, Expedia, and GYG within milliseconds. This is the core of the Odybook engine.
Priority vs. FIFO (First-In-First-Out)
In peak seasons, you may want to favor 'Direct' bookings (no commission). Use the 'Channel Blocking' feature to automatically close OTA sales when your direct inventory reaches 80% capacity, saving the last seats for full-margin direct sales.