It means «hosted payment page».
One component of the AlphaHub is AlphaHPP, our hosted payment page service.
Format
Merchants communicate with the AlphaHPP by means of submission of hidden parameters in a HTTPS POST. These parameters retrieve the necessary configuration for the merchant paypage and seed necessary information for the transaction for example the currency and amount.
The customer is then redirected to the hosted payment page or in the case of an iFrame deployment, the iFrame is displayed on the merchants site (under the merchants control).
The results of the payment request are returned to a url configured by the merchant as the result page. Similar to the request hidden parameters are posted that inform the merchant of the result of the payment transaction.