Simple question and I believe the answer is yes. If I have 4 different membership systems (e.g. WP, Drupal, Phpbb, etc.) and Amember has an integration plugin for each one, theoretically signing up in Amember will replicate the username and password details to each of the other product databases? Thanks
Amember will provide single signon for each of those systems, yes. Whether it is done via DB replication or view session creation, each one may be different.