This is one of the most common questions I get, and a completely valid one. The answer depends on which tools you're using and how they're configured.
Enterprise versions of tools like ChatGPT Enterprise, Microsoft Copilot 365, and Claude for Teams do not use your data to train their models and keep it within your environment. Free and consumer versions have different policies — which is exactly why choosing the right tier matters.
During an audit, I review your specific setup and make sure the tools you're using are appropriate for the sensitivity of your data. For organisations with strict requirements (financial services, legal, etc.), I'll work within your approved toolset — which is often Microsoft-only — rather than recommending new platforms.
I also strongly recommend adding a short AI usage clause to your client contracts, which I can help you draft.