Write SQL query to solve given problem: Which regions have online sales channels that have the most discounts?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T2.Region FROM `Sales Orders` AS T1 INNER JOIN `Sales Team` AS T2 ON T2.SalesTeamID = T1._SalesTeamID WHERE T1.`Sales Channel` = 'Online' ORDER BY T1.`Discount Applied` DESC LIMIT 1