Short answer: LINE OA is the chat channel; LIFF is a screen that opens inside that chat. A store that takes bookings needs the OA to talk and LIFF so customers can book, see points and history without logging in again.
What LINE OA does
- Send and receive messages, broadcasts, rich menu
- Keyword auto-replies, or AI via webhook
- Knows who is a friend — but not which customer they are in your store, until it is connected to a system
What LIFF does
- A booking page that already knows who is booking (LINE passes the identity)
- Member card, points, remaining sessions
- Pre-service forms such as allergies and consent
Do you need a CRM?
If LINE data should become a customer history every staff member can see, you need a back office — Nexora CRM or your existing system via API. Otherwise the data stays in the chat.