Yes, Postback is also an option but the Kite team says:
For individual developers, Postbacks over WebSocket is recommended, where, orders placed for a particular user anywhere, for instance, web, mobile, or desktop platforms, are sent.
So using WS is a professional approach and efficient as well.
1. WS
on_order_update
, To listen for order updates, you must write your own logic.2. Polling API for order status
Kite team doesn't suggest polling the order status; a better approach is to listen to the on_order_update efficiently.
Go through: Order Status & Thread
https://kite.trade/docs/connect/v3/postbacks/