What is the difference between targeting, retargeting and dynamic retargeting?

Question

contextual advertising

Do I understand correctly that this is all done through Yandex Direct and Google Adwords?
What does teaser mean? What is a trigger?

Answer 1

To be honest, your questions are very generalized and simple. The answers to them are easier to find in the same Yandex or Google - there are whole articles that reveal the details. Since I am not reprinting any article here, I will answer in a simplified way.
Targeting - the general concept of "targeting" advertising on some basis. By demographic (gender, age), geographic (country, city), user interests or other. If we talk about Yandex.Direct and Google Adwords, then these are often keywords - that is, queries that users enter in the search for these systems.
Retargeting / remarketing - "retargeting". That is, displaying ads to a user who, relatively speaking, has already fallen under the influence of the previous targeting. Usually these are those users who have already visited the site, visited some specific pages, performed some action on the site. They will be shown ads with an offer to return.
Dynamic retargeting / remarketing is used in cases where there can be many of these specific pages on the site. For example, for online stores. In this case, for each specific page visited, the product will generate its own ad for its user and it will be shown to him on other sites. So, if he looked at some product, but did not buy it, he will be offered in an advertisement to return to the online store and order this particular product.
A teaser is an ad format that consists of a small picture and short attractive text. This format is also available in the Yandex.Direct system. But usually, when they talk about teasers, they mean posting on social networks or teaser systems specially tailored for this format.
A trigger is a very general concept that can apply to many different areas of activity. With regard to advertising, the emotional component of the advertising medium can be implied, inducing to the target action. For example, calls in the text of an advertisement or on a website to make a purchase or call.