Typical uses of confidential information may be: implementation of certain professional services (e.g. B engineering, software needs analysis, management consulting); the implementation of due diligence of an acquisition target company; examination of the terms of a potential joint venture or other business opportunity; etc. A confidentiality agreement (NDA), also known as a confidentiality agreement or confidential disclosure agreement, is a legal contract between two parties that describes confidential documents, knowledge or information that the parties wish to share for specific evaluation purposes, but who wish to restrict wider use or dissemination. This is a contract by which the parties agree not to disclose the information covered by the agreement. .