This document discusses how to build a proactive bot using the Microsoft Bot Framework. It provides prerequisites including Visual Studio 2017, an Azure subscription, and Bot Framework fundamentals. It explains that a proactive bot can initiate conversations with users by responding to state changes captured in an Azure Storage Queue triggered by an Azure Function using the Bot Framework and Direct Line API. The document includes a demo source code link, debugging steps using ngrok, and a 5-step process for creating a proactive bot along with contact information for questions.