An enterprise information system ( EIS ) is a kind of information system that improves the functions of an enterprise business process by integration. This means clustering Typically Offering high quality of service, dealing with broad volumes of data and can Some of Supporting broad and complex Possibly organization or enterprise. An EIS must be able to be used by all parts and all levels of an enterprise. 
The word enterprise can have various connotations. Frequently the term is used only to refer to very large organizations such as multi-national companies or public-sector organizations. However, the term may be used to mean virtually anything, by virtue of it becoming the latest corporate-speak buzzword . [ Citation needed ]
Enterprise information systems provide a technology platform that enables organizations to integrate and coordinate their business processes on a robust foundation. An EIS is currently used in conjunction with customer relationship management and supply chain management to automate business processes.  An enterprise information system provides a single system that is central to the organization that ensures information can be shared across all functional levels and management hierarchies .
An EIS can be used to increase productivity and reduce service cycles, product cycles and life cycles.  It may be used to amalgamate existing applications. Other outcomes include higher operational efficiency and cost savings. 
Financial value is not usually a direct result of the implementation of an enterprise information system. 
At the design stage the main characteristic of EIS is the evaluation of the probability of delivery of various messages. 
Enterprise systems create a standard data structure and are invaluable in Eliminating the problem of information fragmentation Caused by multiple information systems Within an organization. An EIS differentiates itself from legacy systems in that it self-transactional, self-helping and adaptable to general and specialist conditions.  Unlike the information systems, 
A typical enterprise information system Would Be Housed in one or more data centers , Would run enterprise software , and Could include applications Typically That cross organizational borders Such As content management systems .
- Executive information system
- Management information system
- Enterprise planning systems
- Enterprise software
- ^ Jump up to:a b c d e Olson, David L .; Subodh Kesharwani (2010). Enterprise Information Systems: Contemporary Trends and Issues . World Scientific. pp. 2, 13-16. ISBN 9814273163 . Retrieved 20 August 2013 .
- ^ Jump up to:a b Information Resources Management Association (2010). Enterprise Information Systems: Concepts, Methodologies, Tools and Applications . Idea Group Inc. pp. 38, 43. ISBN 1616928530 . Retrieved 20 August 2013 .
- Jump up^ Kalinin IV; Maharevs E .; Muravyeva-Vitkovskaya LA (2015). “ОЦЕНКА ХАРАКТЕРИСТИК ФУНКЦИОНИРОВАНИЯ КОРПОРАТИВНЫХ ИНФОРМАЦИОННЫХ СИСТЕМ С НЕОДНОРОДНОЙ НАГРУЗКОЙ” [Efficiency Evaluation of Enterprise Information Systems with Non-uniform Load]. Scientific and Technical Journal of Information Technologies, Mechanics and Optics (in Russian). 15 (5): 863-868. Doi : 10.17586 / 2226-1494-2015-15-5-863-868 .