Internet Marketing, also known as online marketing, digital marketing, online advertising or digital advertising, is a form of marketing and advertising which uses the Internet to deliver promotional marketing messages to consumers.
There isn’t much difference at all between internet marketing, online marketing and digital marketing though. Digital marketing is the broader term encompassing all marketing that is carried out on an electronic device…whereas, internet and online marketing fall within digital marketing, but refers to marketing content delivered through the Internet.
Online advertising includes email marketing, search engine marketing (SEM), social media marketing, many types of display advertising (including web banner advertising), and mobile advertising. Technically, SEO is not a true form of online advertising – but it is an alternate medium, even though the customer does not pay for any clicks (making it a much more cost-effective solution).