The Core API which is used for most account management and product management activities, this will typically integrate with the various channels of the bank and other bank systems

The Postings API is the single point of contact for all payments integrations into Vault.

The Data Loader API is used to migrate data from legacy systems onto Vault.

The Audit API provides a comprehensive audit system monitoring incoming API calls and their results

And finally the Access API facilities the management of employee roles and permissions on the Vault system.