# The Impact of Information Systems Implementation in the Greek Manufacturing Enterprises
## 2 Literature Review and Research Hypotheses  
Since the early days of IS implementation, several researchers have tried to determine the financial and nonfinancial benefits of modern-era technologies. Their goal was to find out if ICT positively affects the way manufacturers conduct their business and to what extent. They mostly agree that enterprises were more or less positively affected by the use of new technologies. Even an upgrade of a basic IT system to a more advanced one can lead to additional benefits. SMEs can gain much from ISs that would help their strategy and their management as they can provide better customer service, faster communication with customers, better distribution network to distribute their products, etc. The internet helped a lot to that extent, as it is easier for a company to reach the customers. A very important element of ICTs is that they increase systems integration, which greatly helps the managers run their departments based on a combination of information [21]. In [26], the authors suggest that in the supplier selection process the benefits derived from IS implementation are mostly nonfinancial and more related to management decision. In the study conducted in [27], several variables were measured that can be considered as parts of different departments within an organization. The managers of those departments--such as Production, Inventory, Customer, Supply, Distribution, Warehouse, etc.--constantly try to find ways to improve the way they manage the whole department. They also try to determine which parts of the department need more attention or which parts did better [14]. In [20], the authors researched the benefits of ERP regarding the firm's performance. Among other areas of focus, they also studied the effects of ERP into the inventory levels, interaction with customers, and inventory and supplier management [20]. In [28], the authors' research on performance measured those regarding customer service and satisfaction. Therefore, the following hypothesis is proposed:  
**Hypothesis 2 (H2). **: _IS adoption has a positive impact on management (Supply management, Production management, Distribution management, Warehouse management, and Inventory management) and customer service._  
Several studies have tried to determine which areas in a company were affected (positively or negatively) by the implementation of IS. In [28], the authors try to determine whether IT influenced a positively competitive advantage which might positively influence the relationship with the suppliers and the customers. In the current market, a company deals simultaneously with various suppliers that can be culturally different and located at several geographic places of our planet. At the same time, customers constantly seek and demand a constantly increasingly high level of satisfaction. ISs, besides many other benefits, can also provide more negotiation power to the suppliers as they deal with their customers. The stakeholders that are related to a company can all be benefited in several areas of their business as the use of IS enables deeper, more stable, and more relevant relationships between them [26]. ERP can benefit the performance of an organization in several areas such as reduced cost, improved productivity, customer services, and quality. ERP can also lead in better resource management, and it can help managers improve their decision making and planning, etc. [12; 20; 29]. In [30], the authors tried to determine whether companies benefited by IS adoption regarding cost saving and better coordination with the suppliers and the customers, as well as if it helped keep the inventory level lower and determine the cost more accurately. IS adoption can increase productivity and improve inventory control. It can also lead to faster delivery times and cost reduction--the latter benefiting several departments in a firm. With the use of IS, better resource management can improve decision making and planning which helps management, etc. [12; 20; 29].