Persistent vs Session Memory
The distinction between memory that lasts only within one conversation or run (session) and memory stored across sessions (persistent) so the agent recalls past interactions later.
Analogy
Like short-term memory that clears when you leave a room, versus a notebook you keep and reread tomorrow.
Why it matters
It decides whether your agent remembers a customer between conversations or starts fresh every time.
In practice
A session agent forgetting a name after the chat ends, versus a persistent one storing it in a database for next time.