INTERNATIONAL JOURNAL OF SCIENTIFIC & TECHNOLOGY RESEARCH VOLUME 8, ISSUE 11, NOVEMBER 2019 ISSN 2277-8616 655 IJSTR©2019 www.ijstr.org E-Business Requirements For Flexibility And Implementation Enterprise System: A Review Rizgar R. Zebari, Subhi R. M. Zeebaree, Karwan Jacksi, Hanan M. Shukur Abstract: Enterprise systems have a clear role in the market processes, especially e-business systems which play basic role in the world today, with presence of technological evolution many recent technologies appeared which can serve e-business trend such as Internet of Things (IoT), cloud computing and virtual marketplace engineering, which facilitate general enterprise system e-business and e-commerce jobs such as: (buying products in easy way, rapid service delivery to the clients, online responding to the customers’ requests with effective cost, etc), but with rapid marketplace changing and turbulent environment and increasing pressure from stake-holders, it is crucial key for companies to be implemented with high flexibility for competitive issues. These enterprises have to react to these unpredictable changes and provide appropriate services to the customers with minimum cost and time without needing to rebuild the entire system from the start, i.e. this can lead to more time and budget consumption which is needed to rebuild the system to adequate to the environment demands/requirements. Therefore, the companies should consider flexibility factor during implementing their system, because there are various client demands should not be delayed or postponed for another time. This paper is devoted to putting forward the e-business system requirements. hence to implement flexible enterprise system model that organizations entail to take them into account to gain adaptive system. so to minimize the time and cost at the same time and competing with the other enterprise systems in an effective way in term of the cost and time. Index Terms: Cloud Computing, E-business, Enterprise System, Internet of Things, Management System, Performance Measurement, WWW. ——————————  —————————— 1. INTRODUCTION E-Business (electronic business) is a term which used to define or describe a business management method via the Internet using a set of tools and IT technology. E-business encompasses e-government, e-society, e-learning, e- commerce, e-enterprise and more. These electronic businesses facilitate the company processes consisting of buying and selling products, online services; sharing information; online advertising and more [1]. Any business done by using Internet technology to enhance productivity will be defined as E-Business. E-Business term was coined by IBM, in October 1996. It has become popular because of growing and common use of the internet and communication technologies (ICT), which have a noticeable effect on the organizations’ administrations, businesses and processes in view of easy delivery of commodities and services to the customers electronically [2]. It has benefits for firms by giving chances to compete and react to the unpredictable environment and marketplace changing and it has a main role in the world’s economy with more flexibility and efficiency which help the firms to enhance competitiveness [3]. E-business modeled as short-term and dynamic relationships between suppliers and consumers dominate [4]. Generally, the enterprise system concept embraces several kinds of business systems. the most common systems are supply chain management (SCM), enterprise resource planning (ERP), and customer relationship management (CRM) [5]. Center procedures and information stream across business functions is done by integration those systems. Also, offered on a module basis (manufacturing, finance, inventory, purchase, sales, and human resources) [6], [7]. E-business correlated with ICT and World Wide Web to improve variety activities such as company’s processes [8]. The processes can be classified into three main categories: production processes (payments); client processes (customers’ requests processing) and administration processes (video-conferencing, sharing information). There are many kinds of E-Business based on the type of marketplaces: business to client (B2C), client to client (C2C), client to business (C2B), business to business (B2B), government to government (G2G), citizen to government (C2G), government to citizen (G2C), intra-business (which is organization unit to organization unit), and exchange to exchange (E2E) [9], [10When companies planning to investment on enterprise information system (EIS) some implications should consider for example, cost required for implementation, time needed for general EIS data and processes, capabilities required for configuring and implementing systems and risks of deployment. The way companies deal with EIS implementation process risks is a main key for the project success or failure [11], [12]. despite of e-business engineering researchers interested in design mechanisms and economic model, they also have a great concern in IT. With technological evolution many recent technologies appeared which can serve e- business trend such as the Internet of Things (IoT) [13], cloud computing and virtual marketplace engineering [14]. In the last two decades’ researchers have expressed an attention in Service-oriented computing (SOC) development, this led to advance IoT and cloud computing [15]. Therefore, it considers as main support of e-business development [16], [17]. Enterprise system can be adaptive if it is capable to rearrange its sub-systems, or its sub-systems are able of self- organization in a modular system structure in which the sub- systems are actively capable of communication with each other [18], [19] ————————————————  Rizgar R. Zebari, is a faculty of Information Technology Dept. Technical College of Informatics Akre, Duhok Polytechnic University, Akre – Kurdistan Region / Iraq, PH:+964-750-772-3141, E-mail: rzgarz11@gmail.com  Subhi R. M. Zeebaree, is a faculty of Information Technology Dept. Technical College of Informatics Akre, Duhok Polytechnic University, Akre, Kurdistan Region - Iraq, PH:+964-750-433-2160, E-mail: subhi.rafeeq@dpu.edu.krd  Karwan Jacksi, is the Vice President for Student Affairs at the University of Zakho, Kurdistan Region- Iraq, PH:+964-750-458-3908, E-mail: karwan.Jacksi@uoz.edu.krd  Hanan M. Shukur, is a faculty of Al Kitab University, Kirkuk – Iraq, E- mail: hanan89md@gmail.com