Rate parity
Rate parity means the same stay costs the same wherever it is booked, on Booking.com, on Airbnb or on your own website. Many OTAs require it contractually, so undercutting them publicly on your own site can hurt your ranking or breach their terms.
Hosts still steer guests to book direct, just not through a lower headline rate. Common moves include perks for direct bookings such as flexible check-in or late check-out, private discount codes for returning guests, and better cancellation terms. A channel manager helps keep published rates aligned so parity issues never happen by accident.