Bing Chat Enterprise
Bing Chat and Bing Chat Enterprise are extensions to Bing Search available at https://bing.com/ chat. Essentially, both solutions offer ChatGPT-like capabilities that are further enhanced by Bing Search.
Bing Chat Enterprise differs from Bing Chat because it covers aspects of data privacy as well, and sign-in is via a Microsoft Entra ID, formerly Azure AD account. This allows the use of Microsoft Entra security features to secure and control the login. The input and generated texts are not recorded, analyzed or used by Bing Chat Enterprise to train the language models. However, Bing Chat Enterprise cannot access company data in Microsoft 365 and use it to create answers. This is only possible with Microsoft Copilot or via Azure OpenAI.
Bing Chat Enterprise is available through https://bing.com/chat and the Microsoft Edge for Business sidebar. A Microsoft 365 E3, E5, Business Standard, Business Premium, or A3 or A5 license is required to use the feature. Further details on this topic are described here: Bing Chat Enterprise - Your AI-powered chat with commercial data protection
Chat Enterprise & Office Online Apps
To use Bing Chat in combination with the M365 Office Online Apps the way via the Edget Sidebar has to be used. Details on configuration and how IT administrators can control the feature across the enterprise are described here: Manage the sidebar in Microsoft Edge.
If the feature is enabled, it looks like this: