The needs of particular environments may require an actor to use different communications profiles. Security needs will be different for different environments. Security standards will change over time. Actors that participate only in small non-critical negotiations where both parties share a common owner may opt for lighter-weight standards to record transactions. These communications requirements will be expressed as profiles. These communications profiles will change over time without changing the fundamental information exchange between each actor.
There is profiling along a different dimension, profiling systems as economic actors