The topic of this thesis is electronic marketing and examples of companies that use this form of advertising well. The aim of the thesis is to recognize the importance of electronic marketing, to compare the traditional way of advertising with the modern one and to show companies that use it well in practice. To identify the importance of social marketing and marketing in social networks. The first part of the paper deals with marketing itself, its history and comparison of traditional and modern marketing. Nowadays, the number of advertising activities in traditional media such as radio, print media and posters is gradually decreasing, while digital marketing is modern and easy to use and can be used by both small and large companies to carry out their marketing activities. Digital marketing has an extremely significant potential for the successful operation of modern companies, which translates into openness and a better connection with consumers, as it takes into account the needs and desires of individuals. Digital marketing will help companies find business partners, further contributing to their popularity. It is a fact that companies that use electronic marketing achieve better results. Research shows that more than 91% of companies use social media as an advertising tool. On average, companies spend about 15% of their marketing budget on social media. Electronic marketing is constantly changing, but its benefits are recognised by thousands of business owners for whom digital marketing means greater profitability.