Outlook Dev Portal App Registration Tool
Use this app registration tool to quickly create a client ID and secret for your apps that use the Outlook APIs to access Office 365.
New app registrations should be created and managed in the Application Registration Portal to be compatible with Outlook.com.
You can still use this tool to generate a client ID and secret, but bear in mind that your app will not be compatible with Outlook.com, and will not be able to dynamically request permissions scopes.
Existing app registrations that were created in the Outlook Dev Center App Registration Tool or the Azure Management Portal will continue to work for Office 365 only. These registrations do not show up in the Application Registration Portal and must be managed in the Azure Management Portal.