At the beginning of this paper, the reader is introduced to the topic and the goals to be achieved are set. After the introduction, the term e-marketing is explained because the topic is related to it. Part of e-marketing is search engine activity. They are divided into SEO and SEA. These two concepts and their characteristics will be addressed throughout the paper. They are a major part of the theme and it all revolves around that. The search engine advertising chapter will explain what this involves and how this technique is used. The term search engine is mentioned throughout the paper, and their meaning is not known to everyone. Several chapters will show the functions of search engines and why they are important. It will show what SEO techniques are and how they should be used. In the chapter the SEO process will go through the four key components of that process. The paper will emphasize the key words several times, why they are important is explained in this chapter. Prior to the discussion, research and analysis of this was conducted. An analysis of the websites of three companies in Croatia was selected. Three tools available on the Internet were used for the analysis. An explanation of the previously discussed chapters is given in the discussion. Part of the discussion is how digital activities affect business. The question posed in the title of the chapter will be answered. This question was chosen because it is considered that entrepreneurs are also interested in it. We want to emphasize the need to invest in marketing activities on search engines and their profitability.