Open Network for digital commerce (ONDC) is an open network that enables buyers and sellers to connect digitally across various platforms. It emulates UPI. Here it promotes interoperability across e-commerce applications. To put in simple words if there is a seller in Ecommerce platform A, while a buyer in Ecommerce Platform B. Now what if the buyer in Platform B could see the products of the seller in Platform A. ONDC tries to create this interoperability by acting as a bridge. Hence, transactions can happen through ONDC regardless of the platform.