87
The repeated entry of identical authentication data for different
systems, for example, user management has been synchronised
across the services. In this case, it cannot even be called centralised
authentication.
Single sign‐on
If the Cloud provider offers single sign‐on support as part of Cloud service
integration, that means integration with the authentication centre for all
systems included in the single sign‐on process (usually based on access
manager components sent to the relevant application).
Figure 6: Single‐Sign‐on
Open identity provider integration
Another way to achieve single sign‐on is to use centralised Public Cloud) ID
providers. Cloud (and also on‐premise) services use the identities residing in
public systems such as Facebook, Google, Yahoo, etc. to complete their
authentication process. Yet it remains to be seen whether this integration
approach is really that secure and enterprise‐compliant. At any rate, this has
