An advertisement (often shortened to advert or ad) is the promotion of a product, brand or service to a viewership in order to attract interest, and sales. Advertisements come in many forms, from copy to interactive video, and have evolved to become a crucial feature of the app marketplace.
An advertisement is different from other types of marketing because it is paid for, and because the creator of an advert has total control over the content and message.
Advertisements are a guaranteed method of reaching an audience. By creating an engaging ad, and spending enough to reach many users, advertisements can have an immediate impact on business. This effect could be seen in improved trade or boosted brand recognition, among many different metrics.