Due to growing environmental concerns, green marketing has become increasingly important in meeting consumer demand and improving a brand’s image and reputation. Green marketing follows the same principles as traditional marketing, but focuses on using eco-friendly materials, production methods, packaging, pricing, distribution channels, and promotion. By incorporating green marketing into a branding strategy, companies can benefit by creating a solid brand image and strengthening their position in a highly competitive market. This paper is based on a review of literature, and aims to summarise and classify extant research on green marketing. The paper reviews green marketing as a new way of creating a sustainable competitive advantage. The literature review establishes the difference between traditional competitive advantage and sustainable competitive advantage. Finally, it introduces a conceptual framework for the development of sustainable competitive advantage, including relationship marketing, green marketing, and the components of traditional competitive advantage.