SSO allows access to multiple connected applications through one sign-in experience. Microsoft’s guidance describes users accessing applications assigned to them with one set of credentials. The applications still need the appropriate integration and access setup; signing in once does not mean a person should have access to every business system. Source: Microsoft Learn: Single sign-on

List the applications that matter

Map the systems a team member needs for their role, such as enquiries, documentation and reporting. Check which are connected and who approves access. This makes the intended working setup clear before you judge whether a sign-in project is complete.

Test changes in a person’s role

Include a new starter, a role change and a leaver in the access review. Confirm the result in each connected application. These checks focus on the access people should have throughout their time with the business, rather than only whether the first login works.

Written and updated by Travelgenix. Sources checked on 19 October 2026. Practical advice and examples are Travelgenix editorial guidance.