- AA: Authentication and Authorisation
 - AAA: Authentication, Authorisation and Accounting
 - AAI: Authentication and Authorisation Infrastructure
 - AARC: Authentication and Authorisation for Research and Collaboration
 - API: Application Programming Interface
 - AS: Authorisation Server
 - AUP: Acceptable Use Policy
 - AuthN: Authentication
 - AuthZ: Authorisation
 
- CoCo: GÉANT data protection Code of Conduct
 - CSIRT: Computer Security Incident Response Team
 
- EC: European Commission
 - eduGAIN: AAI confederation interconnecting national and community-wide R&E identity federations
 - eduroam: education roaming – International roaming service for users in R&E
 - eID: Electronic Identification
 - EOSC: European Open Science Cloud
 - EU: European Union
 
- FAIR: Findable, Accessible, Interoperable and Reusable (data principles)
 - FAQ: Frequently Asked Questions
 - FIM4R: Federated Identity Management for Research
 - FQDN: Fully Qualified Domain Name
 
- GDPR: General Data Protection Regulation
 - GÉANT: The pan-European research and education network
 - GUI: Graphical User Interface
 
- HA: High Availability
 - HO: Home Organisation
 - HTTP: Hypertext Transfer Protocol
 - HTTPS: Hypertext Transfer Protocol Secure
 
- IAM: Identity and Access Management
 - IdM: Identity Management
 - IdP: Identity Provider
 - IP: Internet Protocol
 
- LDAP: Lightweight Directory Access Protocol
 
- MFA: Multi-Factor Authentication
 
- NREN: National Research and Education Network
 
- OA: Open Access
 - OIDC: OpenID Connect
 - OpenAIRE: Open Access Infrastructure for Research in Europe
 
- PKI: Public Key Infrastructure
 
- R&E: Research and Education
 - R&S: Research & Scholarship
 - RAF: REFEDS Assurance Framework
 - REFEDS: Research and Education FEDerations
 
- SAML: Security Assertion Markup Language
 - SFA: Single-Factor Authentication
 - Shibboleth: An Internet2 project to investigate technology to support inter-institutional Authentication and Authorisation
 - SIRTFI: Security Incident Response Trust Framework for Federated Identity
 - SP: Service Provider
 - SSO: Single sign-on
 
- UI: User Interface
 - UMA: User Managed Access
 - URI: Uniform Resource Identifier
 - URL: Uniform Resource Locator
 - URN: Uniform Resource Name
 
- WebSSO: Web Single Sign-On
 - WISE: Wise Information Security for Collaborating e-Infrastructures
 
- XML: Extensible Markup Language