Advertising is a form of communication used to help sell products and services. Typically it communicates a message including the name of the product or service and how that product or service could potentially benefit the consumer. However, advertising does typically attempt to persuade potential customers to purchase or to consume more of a particular brand of product or service. Modern advertising developed with the rise of mass production in the late 19th and early 20th centuries.

Many advertisements are designed to generate increased consumption of those products and services through the creation and reinvention of the "brand image". For these purposes, advertisements sometimes embed their persuasive message with factual information. There are many media used to deliver these messages, including traditional media such as television, radio, cinema, magazines, newspapers, video games, the carrier bags, billboards, mail or post and Internet marketing. Today, new media such as digital signage is growing as a major new mass media. Advertising is often placed by an advertising agency on behalf of a company or other organization.

Organizations that frequently spend large sums of money on advertising that sells what is not, strictly speaking, a product or service include political parties, interest groups, religious organizations, and military recruiters. Non-profit organizations are not typical advertising clients, and may rely on free modes of persuasion, such as public service announcements.

Money spent on advertising has increased dramatically in recent years. In 2008, spending on advertising has been estimated at over $150 billion in the United States and $385 billion worldwide, and the latter to exceed $450 billion by 2010.

While advertising can be seen as necessary for economic growth, it is not without social costs. Unsolicited Commercial Email and other forms of spam have become so prevalent as to have become a major nuisance to users of these services, as well as being a financial burden on internet service providers. Advertising is increasingly invading public spaces, such as schools, which some critics argue is a form of child exploitation. In addition, advertising frequently uses psychological pressure (for example, appealing to feelings of inadequacy) on the intended consumer, which may be harmful.

Forms of advertising

Advertising can take a number of forms, including advocacy, comparative, cooperative, direct-mail, informational, institutional, outdoor, persuasive, product, reminder, point-of-purchase, and specialty advertising.

Advocacy Advertising Advocacy advertising is normally thought of as any advertisement, message, or public communication regarding economic, political, or social issues. The advertising campaign is designed to persuade public opinion regarding a specific issue important in the public arena. The ultimate goal of advocacy advertising usually relates to the passage of pending state or federal legislation. Almost all nonprofit groups use some form of advocacy advertising to influence the public's attitude toward a particular issue.

Comparative Advertising Comparative advertising compares one brand directly or indirectly with one or more competing brands. This advertising technique is very common and is used by nearly every major industry, including airlines and automobile manufacturers. One drawback of comparative advertising is that customers have become more skeptical about claims made by a company about its competitors because accurate information has not always been provided, thus making the effectiveness of comparison advertising questionable.

Cooperative Advertising Cooperative advertising is a system that allows two parties to share advertising costs. Manufacturers and distributors, because of their shared interest in selling the product, usually use this cooperative advertising technique. An example might be when a soft-drink manufacturer and a local grocery store split the cost of advertising the manufacturer's soft drinks; both the manufacturer and the store benefit from increased store traffic and its associated sales. Cooperative advertising is especially appealing to small storeowners who, on their own, could not afford to advertise the product adequately.

Direct-Mail Advertising Catalogues, flyers, letters, and postcards are just a few of the direct-mail advertising options. Direct-mail advertising has several advantages, including detail of information, personalization, selectivity, and speed.

Informational Advertising In informational advertising, which is used when a new product is first being introduced, the emphasis is on promoting the product name, benefits, and possible uses

Institutional Advertising Institutional advertising takes a much broader approach, concentrating on the benefits, concept, idea, or philosophy of a particular industry.companies often use it to promote image-building activities, such an environmentally friendly business practices or new community-based programs that it sponsors. Institutional advertising is closely related to public relations, since both are interested in promoting a positive image of the company to the public.

Outdoor Advertising Billboards and messages painted on the side of buildings are common forms of outdoor advertising, which is often used when quick, simple ideas are being promoted. Since repetition is the key to successful promotion, outdoor advertising is most effective when located along heavily traveled city streets and when the product being promoted can be purchased locally. Only about 1 percent of advertising is conducted in this manner.

Persuasive Advertising Persuasive advertising is used after a product has been introduced to customers. The primary goal is for a company to build selective demand for its product. For example, automobile manufacturers often produce special advertisements promoting the safety features of their vehicles.

Product Advertising Product advertising pertains to nonpersonal selling of a specific product.

Reminder Advertising Reminder advertising is used for products that have entered the mature stage of the product life cycle. The advertisements are simply designed to remind customers about the product and to maintain awareness.

Point-of-Purchase Advertising Point-of-purchase advertising uses displays or other promotional items near the product that is being sold. The primary motivation is to attract customers to the display so that they will purchase the product.

Specialty Advertising Specialty advertising is a form of sales promotion designed to increase public recognition of a company's name. A company can have its name put on a variety of items, such as caps, glassware, gym bags, jackets, key chains, and pens. The value of specialty advertising varies depending on how long the items used in the effort last. Most companies are successful in achieving their goals for increasing public recognition and sales through these efforts.

Objectives of the advertising

Advertising objectives are the communication tasks to be accomplished with specific customers that a company is trying to reach during a particular time frame. A company that advertises usually strives to achieve one of four advertising objectives: trial, continuity, brand switching, and switchback. Which of the four advertising objectives is selected usually depends on where the product is in its life cycle.

Trial The purpose of the trial objective is to encourage customers to make an initial purchase of a new product.companies will typically employ creative advertising strategies in order to cut through other competing advertisements. The reason is simple: Without that first trial of a product by customers, there will not be any re peat purchases.

Continuity Continuity advertising is a strategy to keep current customers using a particular product. Existing customers are targeted and are usually provided new and different information about a product that is designed to build consumer loyalty.

Brand Switching Companies adopt brand switching as an objective when they want customers to switch from competitors' brands to their brands. A common strategy is for a company to compare product price or quality in order to convince customers to switch to its product brand.

Switchback Companies subscribe to this advertising objective when they want to get back former users of their product brand. A company might highlight new product features, price reductions, or other important product information in order to get former customers of its product to switchback.

1.2 Delivery methods

Display advertising

Display advertising conveys its advertising message visually using text, logos, animations, videos, photographs, or other graphics. Display advertisers frequently target users with particular traits to increase the ads' effect. Online advertisers (typically through their ad servers) often use cookies, which are unique identifiers of specific computers, to decide which ads to serve to a particular consumer. Cookies can track whether a user left a page without buying anything, so the advertiser can later retarget the user with ads from the site the user visited.

As advertisers collect data across multiple external websites about a user's online activity, they can create a detailed picture of the user's interests to deliver even more targeted advertising. This aggregation of data is called behavioral targeting. Advertisers can also target their audience by using contextual and semantic advertising to deliver display ads related to the content of the web page where the ads appear. Retargeting, behavioral targeting, and contextual advertising all are designed to increase an advertiser's return on investment, or ROI, over untargeted ads.

Advertisers may also deliver ads based on a user's suspected geography through geotargeting. A user's IP address communicates some geographic information (at minimum, the user's country or general region). The geographic information from an IP can be supplemented and refined with other proxies or information to narrow the range of possible locations. For example, with mobile devices, advertisers can sometimes use a phone's GPS receiver or the location of nearby mobile towers. Cookies and other persistent data on a user's machine may provide help narrowing a user's location further.

Web banner advertising

Web banners or banner ads typically are graphical ads displayed within a web page. Many banner ads are delivered by a central ad server.

Banner ads can use rich media to incorporate video, audio, animations, buttons, forms, or other interactive elements using Java applets, HTML5, Adobe Flash, and other programs.

Frame ad (traditional banner)

Frame ads were the first form of web banners. The colloquial usage of "banner ads" often refers to traditional frame ads. Website publishers incorporate frame ads by setting aside a particular space on the web page. The Interactive Advertising Bureau's Ad Unit Guidelines proposes standardized pixel dimensions for ad units.

Pop-ups/pop-unders

A pop-up ad is displayed in a new web browser window that opens above a website visitor's initial browser window. A pop-under ad opens a new browser window under a website visitor's initial browser window.

Text ads

A text ad displays text-based hyperlinks. Text-based ads may display separately from a web page's primary content, or they can be embedded by hyperlinking individual words or phrases to advertiser's websites. Text ads may also be delivered through email marketing or text message marketing. Text-based ads often render faster than graphical ads and can be harder for ad-blocking software to block.

Mobile Advertising

Mobile advertising is ad copy delivered through wireless mobile devices such as smartphones, feature phones, or tablet computers. Mobile advertising may take the form of static or rich media display ads, SMS or MMS ads, mobile search ads, advertising within mobile websites, or ads within mobile applications or games. Industry groups such as the Mobile Marketing Association have attempted to standardize mobile ad unit specifications, similar to the IAB's efforts for general online advertising.

Mobile advertising is growing rapidly for several reasons. There are more mobile devices in the field, connectivity speeds have improved, screen resolutions have advanced, mobile publishers are becoming more sophisticated about incorporating ads, and consumers are using mobile devices more extensively. The Interactive Advertising Bureau predicts continued growth in mobile advertising with the adoption of location-based targeting and other technological features not available or relevant on personal computers.

Email Advertising

Email advertising is ad copy comprising an entire email or a portion of an email message. Email marketing may be unsolicited, in which case the sender may give the recipient an option to opt-out of future emails, or it may be sent with the recipient's prior consent.

Online classified advertising

Online classified advertising is advertising posted online in a categorical listing of specific products or services. Examples include online job boards, online real estate listings, automotive listings, online yellow pages, and online auction-based listings. Craigslist and eBay are two prominent providers of online classified listings.

Adware

Adware is software that, once installed, automatically displays advertisements on a user's computer. The ads may appear in the software itself, integrated into web pages visited by the user, or in pop-ups/pop-unders. Adware installed without the user's permission is a type of malware.

Affiliate Marketing

Affiliate marketing occurs when advertisers organize third parties to generate potential customers for them. Third-party affiliates receive payment based on sales generated through their promotion.

1.3 Benefits of online advertising