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Microsoft Bot Framework Architecture

In this article, we will discuss the architecture of the bot framework.

Architecture

The bot framework has the following components.

Bot service - Once your code is developed using C# or node.js, it is deployed on the cloud. The bot then exposes itself using the end point called the messaging endpoint. The bot logic, authorization, authentication and cognitive services resides in the cloud post deployment.
Cognitive services - Cognitive services are basically the AI services used by the bot. Some of the examples of the cognitive services are Natural Language Processing, Face Recognition etc.
Channels - Channels are those platforms where your bot is hosted. For example, it could be Facebook, your website, skype etc.
Bot Connector - Bot connecter manages the communication between the bot service and the channel.

Picture showing the different components of the bot framework

Click to Enlarge

Consider a scenario, where a bot is deployed on the Facebook platform. The below diagram explains the communication.

Picture showing the communication of bot deployed on Facebook with the bot service

Click to Enlarge

Step 1 - The user enters the message on the bot hosted on Facebook.

Step 2 - The bot connector adds additional information to the message like from which channel the message is coming.

Step 3 - The message goes to the Bot service hosted on the cloud. The message is processed using the bot logic and the other cognitive services and the response is returned to the Bot connector.

Step 4 - The bot connector sends the message back to the Facebook bot.

Posted By -	Karan Gupta

Posted On -	Monday, November 30, 2020

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