When a textile retailer from Surat approached us, they had a problem that no Silicon Valley playbook could solve. Their customers — mostly wholesale buyers from smaller towns across Gujarat and Rajasthan — were already conducting business on WhatsApp. They would send photos of fabric samples, negotiate prices over voice notes, and confirm orders with a thumbs-up emoji. The retailer wanted to formalise this into a proper e-commerce system, but asking buyers to download an app or visit a website was a non-starter. The answer was to build the entire shopping experience inside WhatsApp.
We used the WhatsApp Business API through a BSP (Business Solution Provider) to build an interactive catalog system. Buyers send a keyword or category name, and the bot responds with a carousel of product images with prices, stock availability, and minimum order quantities. They can browse by tapping interactive buttons, add items to a cart that persists across sessions, and check out with a structured order summary. The entire flow feels like chatting with a knowledgeable salesperson, not navigating a UI.
The backend is a NestJS service that manages product inventory, order lifecycle, and payment links. When a buyer confirms an order, the system generates a Razorpay payment link and sends it in the chat. Once payment is confirmed via webhook, the order enters the fulfilment pipeline with automated WhatsApp updates at each stage — packed, shipped, out for delivery, delivered. For buyers who prefer to pay on delivery, the system supports COD with an OTP-based confirmation at the doorstep to prevent fraudulent delivery claims.
The results exceeded expectations. Within three months, the platform processed over 1,200 orders with an average order value of 15,000 rupees — significantly higher than typical B2C e-commerce. The conversion rate from catalog browse to purchase was 34%, compared to the 2-3% typical of traditional e-commerce websites. The key insight is that for Tier 2 and Tier 3 India, the best UX is no new UX. Meeting customers on the platform they already use every day eliminated every friction point that traditional e-commerce struggles with.