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azureazure-active-directory
Bryce Guinta
Bryce Guinta

Reputation: 3702

What's the difference between client id and tenant id?

Azure requires multiple IDs to create application ServicePrincipal credentials.

What's the difference between the client id and tenant id?

Why does Azure require separate IDs?

Upvotes: 22

Views: 34821

Answers (1)

Sam Cogan
Sam Cogan

Reputation: 4324

An application ID is the ID of the specific application you have created in Microsoft Entra ID (formerly known as Azure Active Directory), you will likely have many applications for different purposes. Each application can have different users assigned access, different criteria for access (MFA, conditional access etc.) and will be configured to authenticate users for different real applications or purposes. Each Microsoft Entra ID/Azure AD application has a unique ID, and this ID is what you give your application to use to talk to it when processing logins etc.

All of your applications sit within an Azure Active Directory instance, or as MS like to call it, a tenant. The tenant ID identifies which Azure AD instance the application sits under, so Azure knows where to look when you request things using that applicaiton ID.

I suppose in theory if Applicaiton IDs were unique globally then you could work out the tenant from the App ID, but that isn't how MS set it up.

Upvotes: 27

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