The Digital Identity and Signature Services (DISS) provides Identity and Access Management (IAM) services for the European Commission, EU Institutions, Agencies and external users. The Back Office team is responsible for the administration, operation, maintenance and continuous improvement of the DISS services, ensuring secure authentication, authorization and identity lifecycle management across the Commission's information systems.

The DISS service consists of the following subservices:

* Corporate User Provisioning (CUD): retrieves identity data from authoritative HR sources and provisions user accounts across the Commission's IT systems

* EUDS (Enterprise User Directory Services): provides enterprise directory services, identity synchronization and user information management across IAM platforms

* EU Login: provides central authentication services, supporting multiple authentication methods and identity federation for internal and external users

* EU Access: provides centralized authorization and access control services for Commission applications

* MAUS: provides administration of user access, roles and application permissions

* MOSAIC: provides identity administration and provisioning automation services

* SECABC: provides secure address book services and identity information exchange for Commission applications

* EU CAPTCHA: provides CAPTCHA services for Commission applications

* Reorganisation services: support organisational changes while ensuring the consistency of identities, provisioning and access rights across the Commission ecosystem