You are developing a background service that runs as a daemon (no user interaction) and needs to read all users' calendar events from Microsoft 365 to generate an occupancy report. Which authentication approach should this daemon application use to call Microsoft Graph?

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OAuth 2.0 client credentials flow with application permissions (e.g., Calendars.Read application permission) granted via admin consent. Daemon applications that run without user interaction must use the client credentials flow with application permissions. An admin grants consent once for the required permissions (e.g., Calendars.Read), and the app uses its own identity (client_id + secret or certificate) to acquire tokens and call Graph.

You are developing a background service that runs as a daemon (no user interaction) and needs to read all users' calendar events from Microsoft 365 to generate an occupancy report. Which authentication approach should this daemon application use to call Microsoft Graph?

You are developing a background service that runs as a daemon (no user interaction) and needs to read all users' calendar events from Microsoft 365 to generate an occupancy report. Which authentication approach should this daemon application use to call Microsoft Graph?

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