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A major benefit of the OIDC Provider is to allow merchants start using the BankID Services with minimum integration effort compared to the legacy integration option (ie. install BankID Server, add a BankID merchant certificate and integrate towards the proprietary API of BankID server). For the xID Service the OIDC Provider is the only integration option available to merchants.
As suggested by the figure, note that xID plays an important role among all IDP-options since it can be used to derive the user ID that other IDP-options may depend on. When xID is used with BankID in this way, the end-user is reliefed from entering his national identity number (or phone number) in the first BankID dialgoue.
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