The object model describes the building block concept as defined within the architectural process. Building blocks are communicative concepts between architects themselves and between architecture and the various stakeholders such as developers and administrators. In addition, also internal services and possibly external stakeholders such as suppliers or chain partners. The model consists of a limited set of concepts with mutual relationships. This model has been developed into an ArchiMate business object diagram. The concepts in the objects and definition diagram are then worked out in detail and thus describe the frameworks of the building blocks.