A reference architecture is an architectural design pattern that indicates how an abstract set of entities and relationships realizes a predetermined set of requirements, fundamental concepts, and relationships (that is, reference model) in the domain of interest.
The purpose of reference architecture is to give a realization, which is a high-level solution artifact, and to architects, a standard model from which to architect specific solutions for their respective business domain.
According to TOGAF, and in general, we have the following reference architecture continuum from abstract to concrete by influencing and refining further. For each of these categories of architecture, we have a reference architecture: ...