Publisher
A publisher is a company or individual that owns and operates a website, blog, or app and allows other businesses to advertise on their platform.
There are several types of publishers in the digital advertising industry.
Content publishers include websites or blogs that publish articles, videos, or other types of content. Content publishers often monetize their platforms through advertising, either by selling ad space directly or through an ad network.
App publishers are companies or individuals that develop and distribute mobile apps and monetize them through in-app advertising.
Social media also works as publishers that allow businesses to advertise to their users through sponsored posts, ads, and other types of sponsored content.