Dex is an open-source identity service that sits between applications and existing login systems. Applications connect to it over OpenID Connect, and Dex handles the connections to upstream providers such as LDAP directories, SAML identity providers, GitHub, Google and Microsoft. Operators run it on Kubernetes, as a container or as a single binary. It is a federation layer rather than a user directory, so accounts stay in the systems behind it.
The project names no owning company. It is governed by the Cloud Native Computing Foundation, which operates under The Linux Foundation, and it is released under the Apache 2.0 licence. No foreign parent company that could be relevant under the CLOUD Act is therefore named. The operator decides where the data is stored, including in a European data centre. For a European organisation, the open licence means the code can be audited, modified and operated without depending on an external hosting service.