E-BusinessNowadays, information systems have been expanded from the daily use of our working life because in this age of information, certainly every activity of our life daily life requires people to be involved in the use of information systems. It is very important to have a basic understanding of information system and technology in the business area, because information system has become an integral part of our daily business activity such as marketing, operations management, finance, accounting and any other business function. Information system and technology are fundamental components for success in business and organization and are a business imperative because they constitute an important field of study in business administration and management. Furthermore, if we understand information systems and their function, it is first necessary to be clear about the concept of system. According to (O'Berien & Marakas, 2010, p. 4) "A system is a set of interconnected components, with a clearly defined boundary, that work together to achieve a common set of objectives", the simple definition of information system is all components and resources necessary to provide information, purposes and tasks to the organization. Information system can be any organized combination of communication network, people, hardware, software, retrieve, transform, data resource, policies and procedures that store and disseminate information in an organization. Information technologies, including Internet-based information systems, are projected to play a significant and growing role in the business world. Furthermore, information technology can help all types of companies improve the efficiency and effectiveness of their business processes, work group collaboration and... middle of paper... In conclusion, the information system it is very important for our daily life business activities such as marketing, operations management, finance, accounting and any other business function that makes it easier for us to do our job more easily. Furthermore, e-business helps the company reduce costs and retain customers, as well as increase communication with people around the world. Works CitedAndam, Z. R. (2003). Electronic commerce and e-business. Asia.Hardcastle, E. (2011). Company information system. www.bookboon.comNielsen, c., & Lund, M. (2013). The basics of business models. www.bookboon.comO'Berien and Marakas. (2010). International information system (fifteenth ed.). New York, United States, America: McGraw-Hill/Irwin.Shipsey, R. (2012). Information system: Fundamentals of e-business (Vol. I). London, UK: University of London.