In the dynamic environment of the digital age, effective digital marketing strategies are crucial for businesses seeking to connect with their target audience. "Digital marketing by example from practice" represents extensive research of aspects of digital marketing and their implementation on a real-life example. This paper examines the theory of digital marketing and its application in practice, on a real online business, offering useful insights for marketers and companies looking to thrive in the digital realm. The paper begins by following the dominant marketing thought from the middle of the 20th century until today to better understand the trends that are current nowadays and that affect the market. It then describes the fundamental concepts of digital marketing, which encompass the diverse group of channels and tools available to modern businesses such as website marketing, social media marketing, search engine optimization (SEO), and email marketing. The research culminates in an analysis of the current and proposal of a new digital marketing strategy of a small online business. By analyzing this real-world example in detail, readers gain important insights into the complexities of digital marketing, such as the importance of transparency and social responsibility, the power of quality content in website marketing, and the art of leveraging data analytics for informed decision-making. Furthermore, the paper highlights the adaptability of digital marketing strategies in response to evolving consumer behaviors and technological advances. It emphasizes the role of openness and innovation of marketing experts in creating compelling digital campaigns that resonate with audiences in an ever-changing digital environment. In conclusion, "Digital marketing by Example from practice" serves as a guide and a knowledge resource. By learning from the successes and strategies of others,readers can harness the full potential of digital marketing to achieve their business goals, improve their online visibility, and engage effectively with their target audiences in the digital era.