+1 to It MAY be an absolute URI, as specified by Section 4.3 of [RFC3986]".
Since the Audience Restriction can be a logical name to be interpreted by the
Resource Server, if it really wants to enforce the audience check for a set of
Resources it wants to protect.
Hence, a logical name can be an
I liked the usage in https://tools.ietf.org/html/rfc7515
Collision-Resistant Name
A name in a namespace that enables names to be allocated in a
manner such that they are highly unlikely to collide with other
names. Examples of collision-resistant namespaces include: Domain
