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How is Daily Active Users calculated?

Understanding how ZITADEL calculates DAUs (Daily Active users) at a deeper level.

Daily Active Users (DAU) are defined as users who authenticate or refresh their tokens ("login") during a given day. Every day that user logs in using ZITADEL, they are considered a unique daily active user. To calculate the monthly quota, we take the sum of DAU over a given month.

Example: If I log in on April 1st, I am one DAU. When I log in on April 2nd, it counts as a second DAU and so on. If I log in 20 days during a given month, I am considered 20 DAU's.

Included are all users that either log in with a local account or users that log in with an external identity provider. If I login with Entra ID using ZITADEL, this is counted as one unique DAU (not one for the local user and one for Entra ID).

Service users that authenticate or access the management API are treated exactly the same as human users and one authentication is being counted as one DAU.