What are the differences between traditional marketing and digital marketing?

In short words:

Traditional marketing is the marketing of products or services in offline channels. For eg: Newspapers, Banners, TV, etc.

Digital marketing is the marketing of products or services online. ie. across the internet and social media channels. Eg: Social media marketing, Google or Facebook Ads etc.

One other main difference is the targeting. In digital marketing, you can target specific demographics and groups. But in traditional marketing, you are pushing your product/ service to a broad audience.

Digital marketing campaigns are less expensive to run compared to traditional marketing. However, the ROI is dramatically high in digital marketing compared to traditional. This is one of the reasons why most brands are moving to digital marketing.