The supply chain of each company is one of the most important parts of it as it can make the difference between success or not. Most companies do not compete only in terms of products but mainly on the performance of their supply chain they have developed. The aim of this thesis is to explore a suitable model for Greek companies to enhance their performance and compete not only each other but with the foreign companies. The thesis participated at a huge project of research around the world with a fix questionnaire that was sent to various companies that have logistics department around the world. This thesis deals with the Greek region and the Greek companies. Then, a statistical analysis of the responses was conducted using the SPSS and AMOS program to draw conclusions. The analysis shows what these crucial elements ensure that each supply chain can perform greatly and to advance to a core business for each business.