WhatsApp-first Technical Guide

What is WhatsApp-first?

WhatsApp-first is a software development and business strategy paradigm that prioritizes WhatsApp as the primary interface for user interaction, rather than traditional web apps, mobile apps, or emails.

In a WhatsApp-first architecture, the user journey—from onboarding and transactions to support and notifications—happens entirely or predominantly within the WhatsApp ecosystem. This approach leverages the massive user base, high engagement rates, and familiarity of the platform to deliver frictionless experiences.

This Technical Guide contains the Request For Comments (RFCs) that define the architecture, standards, and best practices for building WhatsApp-first applications robustly and scalably.