The merchant can get integrated with PayU by using one of the below methods:
1 . Non-Seamless Integration:
In this mode during the transaction, the customer would be re-directed from merchant website to PayU payment page. On the PayU payment page, he would need to select the payment option and enter the respective card details. After this, PayU would re-direct the customer to the desired bank webpage for further authentication.
2 . Seamless Integration:
In this mode, the merchant needs to collect the customer card details on their own website and post them to PayU. Here, the customer would not be stopped at PayU payment page at all, as the payment option and card details are already received from the merchant. The merchant must be PCI-DSS certified in this case. For further information on PCI-DSS certification please contact your Account Manager at PayU.