Businesses all over the globe today are adopting the information system architecture (ISA) as a strategy to improve performance in the face of stiff competition. In recent years, businesses have had to deal with more and more difficult business environments, as well as new information technology changes and opportunities, like the Pre-developed software components model, better telecommunications, and off-the-shelf modules for Enterprise Systems. All of these require a constant redraw and rethinking of business plans. It is now possible to get business information quickly, efficiently, and cheaply as a result of Information Technology. This means that business processes can be automated and improved. Althoughthere have been a lot of important technological changes, information systems that help businesses donot always respond quickly enough to the needs of businesses. This causes a misalignment between business and information technologies (IT), which hurts businesses' ability to compete. On the other hand, enterprise resource planning (ERP) systems is becoming a must-have for firms trying to make the most use of their resources. They can assist executives in reallocating human and financial resources, as well as in developing more effective core business processes that save money without losing quality or performance.An ERP system is useful for planning and coordination. Employees may see detailed information about current available inventory and client orders, as well as compare supplier purchase orders and predict future demands. ERP software also promotes communication and cooperation by allowing employees to check on the state of other departments in order to inform their own choices.Therefore, this article x-rays the importance of Information System Architecture (ISA) and enterprise resource planning in order to build information systems that are able toaid an organization's strategy and business needs.