Learners learn how to version and improve an app, enhance application scalability and functionality, and troubleshoot popular problems with the app.Trong m?t ng??i s??l?n h?i viên có th??th?c Hello?n rút ti?n Shbet ???c c?ng c??c quy ??nh là t?i ?a 5 l?n ??i v?i c?p ???thành viên thông th??ng. ??i v?i thành viên c?p VIP thì s??có 10 l?n