Marketing 3.0 refers to the current era of marketing in which relationships with highly aware customers are key. It emphasizes being human-centric rather than product- or customer-centric as previous eras did. Some keys of Marketing 3.0 include innovating products, building good relationships with customers through virtual technologies and social media, offering flexible products, using data to differentiate, and measuring performance. Relationship building with customers and using digital technology are important for promoting products in Marketing 3.0.