title: How to use AWS Cognito as Single-sign-on?
body: <p>I have 2 sites:</p>
  
  <ul>
  <li>user registration, login and other stuff (will create users in
  cognito user pool)</li>
  <li>user profile (self-care)</li>
  </ul>
  
  <p>Both sites are in different domain. How can I implement SSO between both sites? </p>