WhatsApp Business API SaaS & Chatbot Engine
Multi-tenant WhatsApp Cloud API SaaS for broadcasting, lead capturing, and automated chatbot flows.
🎯 Project Scope & Objectives
Architect a multi-tenant SaaS platform allowing companies to build automated WhatsApp chatbot workflows, send bulk campaign broadcasts, and manage multi-agent shared inboxes.
🏗 System Architecture & Engineering Breakdown
- API Gateway: Official Meta WhatsApp Cloud API webhooks with HMAC signature verification.
- Shared Inbox: Livewire reactive messaging portal supporting real-time conversation transfer.
- Cache & Storage: Redis pub/sub queue handling high-volume incoming message webhooks.
🔄 End-to-End Workflow Pipeline
- Message Ingestion: WhatsApp Cloud API sends incoming message payload via webhook.
- Flow Tree Parsing: Chatbot engine evaluates trigger rules and responds automatically.
- Agent Handover: Escalate complex inquiries directly to a human agent's shared inbox.
📊 Enterprise Outcomes & Metrics
Handled over 50,000 daily WhatsApp messages with zero message loss and sub-200ms automated bot response times.
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