I have a site ABC.COM with WordPress installed and another site DEF.COM which is purely done by hardcoding. And both of the sites are located in two different servers.
What I wanna do sounds simple but I have no idea how to start. I want to create a user and a post remotely and automatically in ABC.COM when a user and a post is created in DEF.COM.
If you don’t want to mess around with the wordpress api/source you can try database replication.
http://dev.mysql.com/doc/refman/5.0/en/replication.html
http://wiki.postgresql.org/wiki/Replication