Grafana is a common tool to visualize data from multiple datasources. Perhaps the most common datasource is Prometheus. If an organization has a Single-Sign On solution, it makes sense to authenticate users centrally with that solution That will make authentication easier and friendlier for end users (authenticate once and then access multiple services), and also enable stronger authentication by adding multifactor authentication.

In addition to authenticating user, it is also possible to authorize Grafana users based on their group membership.