Digital marketing is the use of the internet and digital technologies to promote brands and connect with potential customers. It involves various tactics like search engine optimization, pay-per-click advertising, social media marketing, content marketing, email marketing, mobile marketing, and marketing analytics. Common digital marketing tools include online channels like social media, email, video, and search engines as well as some offline channels like television, radio, and electronic boards. The benefits of digital marketing include increasing customer loyalty, targeting the right audiences, and optimizing conversion rates.