Digital marketing refers to the use of digital channels to promote or market products and services to consumers. This can include tactics such as search engine optimization (SEO), social media marketing, email marketing, online advertising, and mobile marketing.

E-commerce, on the other hand, refers specifically to the buying and selling of products and services online. This can include everything from small, independent retailers selling items on websites like Etsy or eBay, to large, multinational corporations selling products on their own company websites.

Digital marketing can be used to promote and sell products in an e-commerce setting, but it is not limited to this. Digital marketing can be used to promote and sell products or services in many different industries, both online and offline.