Client Credentials is a type of authentication used in software applications to allow a client, such as a web app or service, to securely access resources. This method involves the client providing its own credentials, typically a client ID and client secret, to prove its identity to the server. This approach is commonly used in OAuth 2.0 protocols, where the client requests an access token to interact with APIs. By using client credentials, applications can securely communicate without needing user intervention, making it ideal for server-to-server interactions or automated processes.