How ONDC Works: Buyer Apps, Seller Apps and Network Participants

The Core Network Participants of ONDC

The ONDC ecosystem relies on specialized entities called Network Participants (NPs), each fulfilling a distinct role during a commercial transaction:

1. Buyer Network Participant (BNP / Buyer App): The consumer-facing application where shoppers search for products, view comparative pricing, add items to cart, and initiate payment.

2. Seller Network Participant (SNP / Seller App): Software platforms that onboard physical merchants, maintain digital catalogs, synchronize real-time inventory, and process incoming purchase orders.

3. ONDC Gateway: An intelligent routing switch that broadcasts search queries from Buyer Apps to relevant Seller Apps based on product category, geographic location, and merchant availability.

4. Logistics Service Providers (LSP): On-demand delivery and courier networks that integrate into ONDC to handle package pickup from merchants and delivery to consumer doorsteps.

5. Technology Service Providers (TSP): Software developers and SaaS vendors that build the underlying API integrations for merchants and buyers to connect to ONDC.

The Beckn-Inspired Order Lifecycle Protocol

ONDC transactions follow open, standardized API specifications derived from the Beckn protocol. The transaction lifecycle progresses through six distinct procedural stages:

• Search (`/search` & `/on_search`): The buyer enters a search query (e.g., 'Paracetamol 650mg' in Indiranagar, Bengaluru). The Buyer App sends the query to the ONDC Gateway, which broadcasts it to all registered pharmacy Seller Apps in that geographic radius. Seller Apps respond with real-time product availability, pricing, and fulfillment estimates.

• Select (`/select` & `/on_select`): The buyer selects a specific product from a local store. The Seller App validates current stock, verifies delivery address feasibility, and calculates delivery fees.

• Init (`/init` & `/on_init`): The transaction is initialized. Customer contact details, delivery address, and payment terms are compiled into a draft order.

• Confirm (`/confirm` & `/on_confirm`): The buyer authorizes payment. The order is committed. The Seller App receives the confirmed order and prepares the parcel for pickup.

• Track (`/track` & `/on_track`): Real-time location updates of the assigned delivery courier are shared transparently with the buyer.

• Cancel (`/cancel` & `/on_cancel`): Structured cancellation and refund workflows handled according to network policy.

Issue & Grievance Management (IGM) Framework

In a decentralized network with thousands of independent merchants and multiple buyer apps, managing consumer grievances is vital. ONDC implements an open Issue & Grievance Management (IGM) framework.

If a customer receives an incorrect item or experiences delivery delays, they raise a ticket inside their Buyer App. The IGM protocol routes the dispute electronically to the responsible party (merchant or logistics provider) with strict service-level agreements (SLAs) for resolution, ensuring consumer protection without requiring a centralized corporate arbiter.

How QwikPharm Fits into the ONDC Architecture

QwikPharm is engineered with ONDC-oriented architecture in mind, functioning as an intelligent retail technology enabler. By managing inventory, batch numbers, and point-of-sale operations in real time, QwikPharm enables independent local pharmacies to maintain synchronized digital catalogs ready for open network commerce integration.

Decentralized Architecture: Resilience Without a Single Point of Failure

Centralized e-commerce platforms rely on massive proprietary server farms; if their central database experiences an outage, millions of buyers and sellers are cut off simultaneously. ONDC, by contrast, operates as a distributed network.

Transactions are negotiated directly between participating Buyer Apps, Seller Apps, and Logistics Providers using cryptographically signed digital payloads. This decentralized design ensures network resilience, eliminates single points of operational failure, and scales horizontally across millions of concurrent transactions.

• Cryptographically signed JSON-LD payloads ensuring message authenticity and non-repudiation.
• Decentralized network architecture eliminating vulnerability to centralized database outages.
• Horizontal scalability across millions of local retail merchants and consumer buyer apps.
• Standardized Issue & Grievance Management (IGM) protocol resolving disputes across participants.

The Path Forward

By mastering the technical interplay between Buyer Apps, Seller Apps, Gateways, and open Beckn protocols, developers and business leaders can harness ONDC to build innovative commerce experiences that empower local Indian trade.