Overt advertising vs. covert advertising
You already know how online advertising works. However, it is worth mentioning that there are overt and covert forms of promotion.

The first ones usually contain information about a product or service that is delivered directly to the recipient. An example of such a form could be a TV spot, billboard or internet banner. Overt advertisements aim to attract the attention of a potential customer and encourage them to take advantage of the offer. You can also use them to promote a website.
The hidden variant, on the other hand, is usually not clearly marked as a form of paid advertising. Its purpose is to subtly introduce an offer in the content of, for example, a film, TV program or sponsored article. The main task is to interest the recipient from a specific demographic group and put them in a state of readiness to buy the product or service.