Claim is a statement that one subject makes about itself or another subject. The statement can be about a name, email address, identity, key, group, privilege, or capability, for example. Claims are issued by a provider, and they are given one or more values and then packaged in security tokens that are issued by an issuer, commonly known as a security token service (STS)

Claim consists of two things, namely a Claim Type and a Claim Value.