Online sales or online marketing referred to a marketing method that sold or promoted products or services through the Internet. The specific work content includes but is not limited to the following aspects: 1. product promotion: promote products or services through online advertising, social media, blog, forum, video, audio and other channels to attract the attention of potential customers and increase product awareness and sales. 2. Customer service: Through online customer service, telephone customer service, email customer service, etc., we provide all-round customer service to solve customer problems and doubts to improve customer satisfaction and loyalty. 3. Sales Management: Through the online sales platform to manage orders, delivery, after-sales service and other sales processes to ensure the smooth progress of sales activities, improve sales efficiency and customer satisfaction. 4. Data analysis: Collect, organize, and analyze sales data through the online sales platform to understand customer needs, purchase behavior, and market trends to formulate sales strategies and optimization plans. 5. Brand Promotion: Through online advertising, social media, word-of-mouth marketing, event promotion and other means to increase brand awareness and reputation, enhance customer trust and loyalty to the brand. Online sales or online promotion required the comprehensive use of a variety of marketing methods to continuously improve the sales process and service quality to improve sales efficiency and customer satisfaction, so as to achieve the sales and promotion of products or services.