You reserve the right to buy a domain name at a later time when you place a backorder for it.
A variety of technological elements influence the backordering process. A domain auctioning website initially put up a website for auction. The next step is to make a bid on the domain and hope that no one beats your price.
Your bid will enter into a backup auction if you are outbid. This secondary auction will only take place if the first one is unsuccessful. They will declare you the winner and you have to pay the winning bid price along with any additional costs if the backup auction is a success.