Microsoft Power Virtual Agents is a chatbot service that allows users to create a bot without writing code, but if they want to add the bot to Azure Bot Service channels, they need to create a Relay Bot that acts as a bridge. This article demonstrates how to create a Relay Bot in C# to connect a Power Virtual Agents bot to Twilio Messaging for SMS or WhatsApp. The process involves collecting required parameters from Power Virtual Agents, creating a Relay Bot with ASP.NET Core Web API, running and testing the Relay Bot, and configuring Twilio's WhatsApp Sandbox with the Relay Bot. The article provides step-by-step instructions and code examples to help developers create a Relay Bot that connects their Power Virtual Agents bot to WhatsApp using Twilio.