Why are there multiple api endpoints for azure oauth?

What is the difference between:

• https://login.microsoftonline.com/common/oauth2/v2.0/token
• https://login.microsoftonline.com/organizations/oauth2/v2.0/token
• https://login.microsoftonline.com/{Directory ID}/oauth2/v2.0/token

Using common (the first endpoint) seems to work fine for generating my tokens?

>Solution :

When you register an application in Azure AD, you are asked to choose the account types that can use the application.

The endpoints essentially corresponds to these.

• https://login.microsoftonline.com/common/oauth2/v2.0/token: You can use common endpoint to authenticate/authorize any account (Personal Microsoft Account or Work/School Account).
• https://login.microsoftonline.com/organizations/oauth2/v2.0/token: When you use organizations endpoint, only Work/School Account can be authenticated. Personal Microsoft Accounts cannot be authenticated/authorized.
• https://login.microsoftonline.com/{Directory ID}/oauth2/v2.0/token: When you specify the directory id (also known as Tenant Id) in the endpoint, only Work/School Accounts in that tenant can be authenticated/authorized. Personal Microsoft Accounts and Work/School Accounts in other tenants cannot be authenticated/authorized unless they are added to the tenant as guest users.