title: How to use selenium to test collaboration of multiple applications
body: <p>I would like to use selenium to test how two or more applications (main, monitoring, management) work together. However all I was able to find is how to test a single application.</p>
  
  <p>Sample scenarios could look like this:</p>
  
  <pre><code>App 1 - user x tries to log in, but has no account and the login fails
  App 2 - a user for App 1 is created
  App 1 - user is now able to log in
  
  App 1 - user x performs a task
  App 2 - displays the performed task
  App 1 - user x finishes a task
  App 2 - displays the finished task
  </code></pre>
  
  <p>The applications may be deployed on different servers. the communication is performed over a common database. The applications are not necessarily implemented using the same technology stack.</p>