> For the complete documentation index, see [llms.txt](https://support.meetuma.ai/uma-knowledgebase/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.meetuma.ai/uma-knowledgebase/integrations/calendar/microsoft-365/oauth-authentication-flow.md).

# OAuth authentication flow

<figure><img src="/files/ie5ZNYl80zFxnZsJWXWo" alt=""><figcaption></figcaption></figure>

UMA provides an easy and secure way to get connected to your Microsoft 365 tenant using OAuth2.0 and OpenID Connect.&#x20;

You must first provide UMA with your Microsoft Azure Tenant ID.

Shown below is the authentication process that UMA uses using OAuth2.0 and Open ID connect:

<figure><img src="/files/Xs8yVOPSLq79cQsRjTFq" alt=""><figcaption></figcaption></figure>

For more information on OAuth and OpenID Connect, follow the documentation below:

{% embed url="<https://learn.microsoft.com/en-us/entra/architecture/auth-oidc>" %}