Got to this one late (lunch), so this is not full notes.

Extended Persistence Contexts

• Rescue the stateful session bean from obscurity
• natural cache of data that is relevant to a conversation
• allows stateful components to maintain references to managed instances instead of detached instances

Conversations

• A conversation takes place anytime a single user interaction spans more than one request
• sometimes helpful to capture conversation in object(s), can optimize, manage lifecycle, etc.

To be quite frank, the content of this session bored me, so I exited early. The basic summary is that if you are doing hardcore EJB and database stuff, you may want to check this topic out in more detail.