Google Sign Up works by allowing users to authenticate themselves using their existing Google credentials. This process involves a few key steps:
The user clicks on the "Sign in with Google" button on your website or app. They are redirected to a Google login page to enter their credentials. Once authenticated, Google redirects the user back to your site with a token. Your application uses this token to request user data from Google's servers. With the user data in hand, you can create a new account or log the user in and capture their email address for your email marketing campaigns.