Internet with its emergence and its development has brought many opportunities and eliminate the spatial and temporal barriers. Realizing the benefits of using the Internet in business, in practice, more and more companies use the Internet and information and communication technology to perform business transactions, promotion ie. For the entire business. Networking economy has become a term used in everyday life. This paper shows that all Internet services used by employees in offices in order to facilitate business - speed business communication, improve the promotion and achieve savings in the business. The paper deals with two companies in the field of civil engineering company "Gaudi" doo and commercial operation "Adžaga construction". For example shows that it is difficult today to imagine business without the Internet, the companies are increasingly turning to modern business - social networks, in order to gain advantage over the competition, the attention of existing and potential business partners and customers. But it also shows that there is still room for progress and improvement, resulting in a successful and efficient operations.