When you register a bot with the Azure Bot Service, an application registration is created in Microsoft Entra ID (formerly Azure Active Directory). This registration serves as the bot's identity. To enable the bot's code to securely communicate with the Bot Framework Service, it must authenticate using the credentials from this application registration. The two essential values required in the bot's configuration for this authentication are the Application (client) ID, referred to as appId, and a client secret, known as the appSecret (often configured as MicrosoftAppPassword). These credentials allow the bot to obtain an access token and prove its identity to the service.

A. botId: The botId is often the same as the appId, but the specific credential used for authentication is the Application (client) ID (appId) from the Microsoft Entra ID registration.
B. tenantId: While the tenantId is part of the bot's identity within a specific directory, the primary credentials for the application's authentication are its unique ID and secret.
D. objectId: The objectId is the unique identifier for the application object in the directory, which is distinct from the Application (client) ID (appId) used for authentication.

1. Microsoft Documentation, "Create a bot with the Bot Framework SDK": This guide details the bot creation process. In the "Update the bot's configuration file" section, it explicitly states: "Your bot's configuration file should contain the app ID and app password values that were generated when you registered your bot." It refers to the settings MicrosoftAppId and MicrosoftAppPassword.

Source: Microsoft Learn. (2023). Create a bot with the Bot Framework SDK for JavaScript - Bot Framework. Section: "Update the bot's configuration file".

2. Microsoft Documentation, "Configure bot authentication settings": This document explains the necessary configuration for a bot. It highlights that the MicrosoftAppId and MicrosoftAppPassword settings in the configuration file hold the bot's app ID and password (client secret).

Source: Microsoft Learn. (2023). Configure bot authentication settings - Bot Service. Section: "Bot identity information".

3. Microsoft Documentation, "Register a bot with Azure Bot Service": This document describes the registration process. In the "Create the client secret" step, it instructs the user to create a secret and notes, "Record the secret's value for use in a later step. You'll use this value, along with the application ID you recorded earlier, to configure your bot's application settings file."

Source: Microsoft Learn. (2023). Register a bot with Azure Bot Service - Bot Service. Section: "Create the client secret".