This web application will configure your Google Account in preparation for a migration of all your Google content to Microsoft 365 email system.
By authorizing this application, and providing the JSON key generated, you will grant full access to your Google account and all of it's data to facilitate a transfer of your content to Microsoft 365.
If you do not want to grant access to your Google account, then you should not use this application.
You must have third-party applications enabled on your Google account to use this web application. If you are an Admin on the Google account, you can confirm this setting at: https://admin.google.com/ac/owl/settings
Make sure "Unconfigured third-party apps" is set to "(Default) Allow users to access any third-party apps".