A Non-Disclosure Agreement (NDA) is a legal contract used to protect confidential information shared between two or more parties. It ensures that sensitive data such as business ideas, financial details, trade secrets, client information, or personal data is not disclosed to unauthorized persons. NDAs are commonly used during business meetings, employment, partnerships, product development, and negotiations. The agreement clearly defines what information is confidential, how it can be used, and the duration of confidentiality. If the terms are violated, legal action may be taken. An NDA helps build trust and safeguards valuable information.