# Glossary

For the complete list of Open Banking terms, we recommend viewing the [official glossary](https://www.openbanking.org.uk/about-us/glossary/).

| Name                          | Term                                         | Definition                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| ----------------------------- | -------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| AISP                          | Account Information Service Provider         | An Account Information Service provides account information services as an online service to provide consolidated information on one or more payment accounts held by a payment service user (PSU) with one or more payment service provider(s) (PSPs).                                                                                                                                                                                                                                                                                                                                                         |
| ASPSP                         | Account Servicing Payment Service Provider   | Account Servicing Payment Service Providers provide and maintain a payment account for a payer as defined by the PSRs and, in the context of the Open Banking Ecosystem are entities that publish Read/Write APIs to permit, with customer consent, payments initiated by third party providers and/or make their customers’ account transaction data available to third party providers via their API end points.                                                                                                                                                                                              |
| CBPII                         | Card Based Payment Instrument Issuer         | Card Based Payment Instrument Issuers facilitate card payments from cardholders to Third Party Providers (TPPs) who do not have access to the cardholder's funds in such a way that the CBPIIs issue card-based payment instruments. The customer can use them to initiate card payments from payment accounts held with another service provider. Prior to authorising the payment, a CBPII has the right to obtain from the cardholder a confirmation that their payment account holds enough money for the payment to be successful (Confirmation of Funds), and if it doesn't, to decline the transaction.  |
| OBSP                          | Open Banking Solution Provider               | Open Banking Solution Providers are companies that offer platforms, APIs, and services to facilitate the secure exchange of financial data between banks, fintech firms, and other third-party service providers.                                                                                                                                                                                                                                                                                                                                                                                               |
| PISP                          | Payment Initiation Service Provider          | Payment Initiation Service Providers facilitate payments between a merchant and the customer in such a way that they can be authorised to connect to the customer's bank account and initiate a payment from that account directly. The payment is made on behalf of the customer, and must be authenticated by the customer, for example with biometrics through a mobile notification. The customer's credentials are not shared with the merchant.                                                                                                                                                           |
| PSU                           | Payment Service User                         | Payment Service Users, also referred to as customers, are the users of different services provided by AISPs, ASPSPs, CBPIIs and PISPs.                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| TPP                           | Third Party Provider                         | Third Party Providers are organisations or natural persons that use APIs developed to Standards to access customer’s accounts, in order to provide account information services and/or to initiate payments. Third Party Providers are either/both Payment Initiation Service Providers (PISPs) and/or Account Information Service Providers (AISPs).                                                                                                                                                                                                                                                           |

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