A secure AI chat that comes with qualifying Microsoft 365 licences and draws mainly on the web. Unlike the licensed Microsoft Copilot, it only works with organisational content that a user uploads, has open in Outlook or Teams, or reaches through a pay-as-you-go agent.
Also called formerly Microsoft 365 Copilot Chat, Microsoft 365 Copilot Chat.
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Each book explains Microsoft Copilot Chat in context, with comparison tables and the common traps.
Terms in this definition
- HTTP / HTTPS
The protocols of the web, with HTTPS being HTTP secured by TLS.
- Microsoft 365
Formerly Office 365, Microsoft's software-as-a-service productivity suite. A Microsoft Entra tenant provides its identity, and its data is not governed by Azure RBAC.
- Microsoft Copilot
Licensed users get this workplace AI assistant, which grounds large language models in organisational data from Microsoft Graph and the Microsoft 365 apps. It respects existing permissions, so people see only what they could already open; without the licence, people use the web-grounded Microsoft Copilot Chat instead.
- Chat message roles
Labels on chat messages: instructions go under system, the person's input under user, the model's previous answers under assistant, and results returned by a called tool under tool (or function).
- Microsoft Online Services Program
Signing up for Azure directly on the website, as a free, pay-as-you-go or Visual Studio subscriber customer, gives you this type of billing account. There are no departments or invoice sections; it simply holds subscriptions.
- Agent
A specialised form of Microsoft Copilot set up for one particular job, pairing instructions with knowledge and skills. You can create one in Copilot Studio, SharePoint or Agent Builder, and administrators control them from the Microsoft 365 admin center.
Related terms
- Copilot Chat
A conversational feature of Microsoft Copilot open to eligible subscriptions with no Copilot licence needed. Earlier it carried the name Microsoft 365 Copilot Chat, and some admin centre labels may not have caught up.