A marketing channel is the people, organizations and activities that make goods and services available for use by consumers. It transfers the ownership of goods from the point of production to the point of consumption. Examples include trade shows, industry events, targeted emails, outbound calling, display advertising and direct sales.

6 Basic Types of Social Proof
There are six types of social proof that you’ll see, well, pretty much everywhere. Choose one type to use in your baseline variant. You’ll want to choose the type you use based on your specific industry and goal.