With the development of the new era and the promotion and application of new technologies, big data technology, cross-border business, new retail policies, digital economy, and new media environment have had a profound impact on modern enterprise marketing. To gain strong competitiveness in the market, contemporary enterprises must base themselves on the background of the times, take the consumption habits of customer groups as the direction, and rely on the development model of marketing, so as to create a marketing model and system that meets the needs of customers, society and enterprises, and achieve the goal of comprehensively enhancing the role and value of marketing. In this regard, this book conducts research on the background of the big data era, the foreign market environment, the 4C marketing theory, the new retail policy environment, and the background of the development of the digital economy, and through the analysis of typical cases in the industry, proposes marketing strategies and practical solutions for enterprises in the current era background, providing assistance for the development, transformation and upgrading of enterprises.