A one-to-one sale with fixed pricing and reserved inventory that is processed automatically. An automated transaction that takes place in the context of OpenRTB. Publishers that make guaranteed deals and sell utilizing MADTech auction technology such as deal IDs are, in effect, selling through MADTech guaranteed. When this occurs, publishers and buyers negotiate a fixed price for reserved inventory, with the publisher linking the deal to said inventory in the RTB platform. The transaction is processed with a solution that was initially designed for real time bidding, but that has been pushed to its limits to support “direct sales”. To complete such a sale, the publisher needs a holistic view of both direct commitments and MADTech sales. Therefore, this type of transaction is limited to platforms like Smart RTB+.