The "Signup Login with Microsoft" Bubble plugin enables seamless user authentication by allowing users to sign up and log in using their Microsoft accounts. This plugin integrates with Microsoft's OAuth2.0, providing a secure and convenient way for users to access your Bubble application. By leveraging Microsoft’s robust authentication system, you can enhance user experience and improve security. To get started, simply configure the plugin with your Microsoft App ID and App Secret, and users will be able to authenticate with their Microsoft credentials in no time.