SIBS offers the following processing services: Issuing, Acquiring, Gateway and Switching. 
 

All these services have the purpose of fulfilling the Portuguese payment system needs, responding to market changes, due to the increase of competition level and forecasting future needs.

Annually, SIBS processes more than 1.800 million transactions in the following Payment Systems: Multibanco, VISA, MasterCard, AMEX, EUFISERV. Additionally, SIBS also processes cards from private networks.
 

Operations performed with payment cards depend on authorization and authentication processes. MB System allows the existence of several routing ways and function scenarios, in order to adjust transaction decisions to the individual strategy of each Institution.
 

The authentication process consists of the validation of the cards’ security elements and PIN.
 

The operations’ acceptance (authorisation) may be done either in real-time scenario, either in an alternative scenario, according to the risk parameters defined by the issuer.

The authorizations may still be assigned to SIBS through pre-established criteria, being the issuer the responsible for the choice of the authorizations’ scenario.
 

The Issuer can also implement  the operations’ acceptance in its own channels, such as home banking, allowing the clients’ access to their account or to some of the operations available in Multibanco network. Processing these operations is called host-to-host service.