The subject of this paper is electronic business in commerce, and the goal is to study what does electronic business in commerce involve and how does it manifest. Today, electronic business has big significance and importance, which also stand for companies which are involved in commerce. It implicates the use of modern and new technological and business processes. That kind of business has its advantages, but also and disadvantages. This paper will also provide answers to questions regarding those advantages and disadvantages of electronic business in commerce, and how to reduce or eliminate those disadvantages. Marketing has also big importance for electronic business for companies which are involved in commerce, which in such environment takes the form of an electronic marketing. That kind of marketing is based on information and databases about customers and their behavior. Within this paper there will also be examined some good examples of electronic commerce in Republic of Croatia and common situation in electronic commerce. Therefore, this paper has its theoretical and practical part. The paper is divided into seven different parts. Those parts are structured logically and added one after another. This work may be of use to all current and future students, and also to entrepreneurs and customers which do their activities in electronic environment and those who want to try this kind of shopping.