This article demonstrates how to send WhatsApp Business messages using AWS End User Messaging Social, a managed API service that eliminates the need to build custom WhatsApp integrations.

• AWS End User Messaging Social provides managed API for WhatsApp Business messaging without maintaining custom integrations
• Supports text, media, templates, location, interactive buttons, lists, contacts, and WhatsApp Flows
• Text messages support up to 4,096 characters within 24-hour conversation windows
• Media messages support images (5MB), documents (100MB), audio/video (16MB)
• Template messages enable business-initiated conversations outside 24-hour windows after Meta approval
• Interactive messages provide buttons or lists for structured customer responses
• WhatsApp Flows enable complex multi-step surveys and forms with optional endpoint integration
• Solution uses AWS Lambda, SNS, and Boto3 SDK for Python implementation
• Includes IAM permissions requirements and security best practices for production deployments

The article provides comprehensive code examples and configuration guidance for implementing various WhatsApp message types through AWS services.