CIMOSA stands for "Computer Integrated Manufacturing Open System Architecture", is an enterprise modeling framework, which aims to support the enterprise integration of machines, computers and people. The framework is based on the system life cycle concept, and offers a modelling language, methodology and supporting technology to support these goals.
It was developed in the 1990s by the AMICE Consortium, in an EU project. Eventually the non-profit organization CIMOSA Association has been established to keep ownership of the CIMOSA specification, to promote it and to support its further evolution.
The original aim of CIMOSA (1992) has been "to elaborate an open system architecture for CIM and to define a set of concepts and rules to facilitate the building of future CIM systems". One of the main idea of CIMOSA is the categorization of manufacturing operations in:
- Generic functions: Generic parts of every enterprise, independent of its organisation-structure or business area.
- Specific (Partial and Particular) functions: Specific for individual enterprises.
Eventually the development of CIMOSA has resulted in two key items:
- Modeling Framework: This framework supports "all phases of the CIM system life-cycle from requirements definition, through design specification, implementation description and execution of the daily enterprise operation".
- Integrating Infrastructure: This infrastructure provides "specific information technology services for the execution of the Particular Implementation Model", which has providen to be vendor independent and portable.
The framework furthermore offers an "event-driven, process-based modeling approach with the goal to cover essential enterprise aspects in one integrated model. The main aspects are the functional, behavioral, resource, information and organizational aspect".
CIMOSA can be applied in process simulation and analysis. Standardized CIMOSA models "can also be used on line in the manufacturing enterprise for scheduling, dispatching, monitoring and providing process information". One of the standards based on CIMOSA is the Generalised Enterprise Reference Architecture and Methodology (GERAM).
The main focus of CIMOSA has been to construct:
- a framework for enterprise modelling, a reference architecture
- an enterprise modelling language
- an integrating infrastructure for model enactment supported by
- a common terminology
A close liaison with European and international standardisation organisations has been established to stimulate the standardisation process for enterprise integration.
CIMOSA aims at integrating enterprise operations by means of efficient information exchange within the enterprise. CIMOSA models enterprises using four perspectives:
- the function view describes the functional structure required to satisfy the objectives of an enterprise and related control structures;
- the information view describes the information required by each function;
- the resource view describes the resources and their relations to functional and control structures; and
- the organization view describes the responsibilities assigned to individuals for functional and control structures.
Begin 1990s the CIMOSA Association (COA) was founded by the AMICE Consortium as a non-profit organisation aiming to promote Enterprise Engineering and Integration (EE&I) based on CIMOSA. It has extended its goals in the new millennium towards "upcoming new enterprise paradigms of extended, virtual and agile enterprises, which cause new requirements on organisational concepts and supporting technologies. Enhanced decision support and operation monitoring and control are some of the needs of today and tomorrow. Capturing knowledge and using it across organisational boundaries will be a major challenge in the new types of businesses. This real-time knowledge needed to support the establishment, deployment and discontinuation of the inter and intra organisational relations".
From the start CIMOSA has been an active supporter for national, European and international standardisation of Enterprise Integration.
In 2010 the CIMOSA Association has been closed due "loss of membership according to people retirements. 
- Architecture of Integrated Information Systems (ARIS)
- Computer Integrated Manufacturing
- Generalised Enterprise Reference Architecture and Methodology (GERAM)
- ISO 19439 Framework for enterprise modelling
- Fadel, F.G., (1994), "A Resource Ontology for Enterprise Modelling", M.A.Sc. Thesis, Enterprise Integration Laboratory. University of Toronto. p.11.
- CIMOSA A Primer on key concepts, purpose and business value Online primer, last update: 02.03.1996. Accessed 01 Feb 2009.
- Arturo Molina, Jose Manuel Sanchez, Andrew Kusiak (1998). Handbook of Life Cycle Engineering: Concepts, Models, and Technologies. pp. 187-188.
- CIMOSA CIM Open System Architecture. Access date 31 Oct 2008.
- CIMOSA European Enterprise Integration Concept Last updated August 21, 2000 by Ted Williams. Access date 31 Oct 2008.
- CIMOSA : A Primer on key concepts, purpose and business value. Last update: 02.03.1996. Accessed 15 Jan 2009.
- Fabio Massacc1 et al.(2007). An Ontology for Secure Socio-Technical Systems. Online paper. Accessed 15 Jan 2009.
- CIMOSA Association e.V., About us. Accessed 16 Jan 2009.
- CIMOSA Association e.V., About us. Accessed 28 Dec 2013.
- AMICE (1993) CIMOSA: OPen Systm Architecture for CIM, second edition, Springer-Verlag, Berlin
- François Vernadat (1996) Enterprise Modeling and Integration: Principles and Applications, Chapman & Hall, London, ISBN 0-412-60550-3