Digital marketing, is a range of marketing strategies and technologies used to connect brands with customers through digital channels. It can include:
Email marketing
Social media marketing
Search engine optimization (SEO)
Content marketing
Online advertising

 Web development is the work involved in developing a website for the Internet (World Wide Web) or an intranet (a private network). Web development can range from developing a simple single static page of plain text to complex web applications, electronic businesses, and social network