There are an ever-increasing number of ways brands can use digital marketing to benefit their marketing efforts, increase sales, and build brand awareness. Digital marketing tactics and methods include search engine optimization (SEO), search engine marketing (SEM), content marketing, e-commerce, social media marketing, social media influencing, e-mail marketing, mobile marketing, display advertising, eBook downloads, market segmentation, re-targeting, in-game advertising, user-generated content, and building customer loyalty with customer relationship management tools.