Starting now and over the next few days GitHub Copilot Business customers will be able to prevent specified files or repositories from being used to inform code completion suggestions made by GitHub Copilot. GitHub Copilot will not be available in excluded files. Organization administrators or repository owners can choose which files or repositories are excluded. During the beta program the feature is limited to Copilot Code Completion and VSCode only. Copilot Chat and the other IDEs will shortly follow.