E-commerce, it is a kind of shopping by use of internet. E-commerce, very different from the usual shopping concept, it is compatible with today's economic dynamics. E-commerce is becoming an indispensable method with the increase of the internet usage. With the use of E-commerce, there are also a number of advantages for companies. On the other hand, SAP is a pioneer and leader in company resource planning software sector. SAP is very important for large-scale companies. They manage all their processes on SAP and its integration is very important with other related software. In this article, we give a brief information in some important aspects about e-commerce and propose a solution for ERP integration of an e-commerce system.