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Pay-per-click (PPC) is an internet advertising model used to drive traffic to websites, in which an advertiser pays a publisher (typically a search engine, website owner, or a network of websites) when the ad is clicked. [1] [2]
Pay-per-click is usually associated with first-tier search engines (such as Google Ads, Amazon Advertising, and Microsoft Advertising). With search engines, advertisers typically bid on keyword phrases relevant to their target market and pay when ads (text-based search ads or shopping ads that are a combination of images and text) are clicked. In contrast, content sites commonly charge a fixed price per click rather than use a bidding system.
PPC display advertisements, also known as banner ads, are shown on websites with related content that have agreed to show ads and are typically not pay-per-click advertising, but instead, usually charge on a cost per thousand impressions (CPM).
Social networks such as Facebook, Instagram, LinkedIn, Reddit, Pinterest, TikTok, and Twitter have also adopted pay-per-click as one of their advertising models. The amount advertisers pay depends on the publisher and is usually driven by two major factors: the quality of the ad, and the maximum bid the advertiser is willing to pay per click measured against its competitors' bids. In general, the higher the quality of the ad, the lower the cost per click is charged, and vice versa.
However, websites can offer PPC ads. Websites that utilize PPC ads will display an advertisement when a query (keyword or phrase) matches an advertiser's keyword list that has been added in different ad groups, or when a content site displays relevant content. Such advertisements are called sponsored links or sponsored ads, and appear adjacent to, above, or beneath organic results on search engine results pages (SERPs), or anywhere a web developer chooses on a content site. [3]
The PPC advertising model is open to abuse through click fraud, [4] although Google and others have implemented automated systems [5] to guard against abusive clicks by competitors or corrupt web developers. [6]
Pay-per-click, along with cost per impression (CPM) and cost per order, is used to assess the cost-effectiveness and profitability of internet marketing and drive the cost of running an advertisement campaign as low as possible while retaining set goals. [7] In Cost Per Thousand Impressions (CPM), the advertiser only pays for every 1000 impressions of the ad. Pay-per-click (PPC) has an advantage over cost-per-impression in that it conveys information about how effective the advertising was. Clicks are a way to measure attention and interest. If the main purpose of an ad is to generate a click, or more specifically drive traffic to a destination, then pay-per-click is the preferred metric. The quality and placement of the advertisement will affect click through rates and the resulting total pay-per-click cost.[ citation needed ]
Cost-per-click (CPC) is calculated by dividing the advertising cost by the number of clicks generated by an advertisement. The basic formula is:
There are two primary models for determining pay-per-click: flat-rate and bid-based. In both cases, the advertiser must consider the potential value of a click from a given source. This value is based on the type of individual the advertiser is expecting to receive as a visitor to their website, and what the advertiser can gain from that visit, which is usually short-term or long-term revenue. As with other forms of advertising, targeting is key, and factors that often play into PPC campaigns include the target's interest (often defined by a search term they have entered into a search engine or the content of a page that they are browsing), intent (e.g., to purchase or not), location (for geo targeting), a device used (e.g. whether the user is searching from a desktop device or mobile) and the day and time that they are browsing.
In the flat-rate model, the advertiser and publisher agree upon a fixed amount that will be paid for each click. In many cases, the publisher has a rate card that lists the pay-per-click (PPC) within different areas of their website or network. These various amounts are often related to the content on pages, with content that generally attracts more valuable visitors having a higher cost per click than content that attracts less valuable visitors. However, in many cases, advertisers can negotiate lower rates, especially when committing to a long-term or high-value contract.
The flat-rate model is particularly common on comparison shopping engines, which typically publish rate cards. However, these rates are sometimes minimal, and advertisers can pay more for greater visibility. These sites are usually neatly compartmentalized into product or service categories, allowing a high degree of targeting by advertisers. In many cases, the entire core content of these sites is paid ads.
The advertiser signs a contract that allows them to compete against other advertisers in a private auction hosted by a publisher or, more commonly, an advertising network. Each advertiser informs the host of the maximum amount that he or she is willing to pay for a given ad spot (often based on a keyword), usually using online tools to do so. The auction plays out in an automated fashion every time a visitor triggers the ad spot.
When the ad spot is part of a search engine results page (SERP), the automated auction takes place whenever a search for the keyword that is being bid upon occurs. All bids for the keyword that targets the searcher's Geo-location, the day and time of the search, etc. are then compared, and the winner is determined. All this happens in real-time, therefore this is called real-time-bidding or RTB, and in a fraction of a second. In situations where there are multiple ad spots, a common occurrence on SERPs, there can be multiple winners whose positions on the page are influenced by the amount each has bid and the quality of their ad. The bid and Quality Score are used to give each advertiser's advert an ad rank. The ad with the highest ad rank shows up first. The predominant three match types for both Google and Bing are Broad, Exact, and Phrase Match. Google Ads and Bing Ads also offer the Broad Match Modifier type (although Google retired it in July 2021) which differs from broad match in that the keyword must contain the actual keyword terms in any order and doesn't include relevant variations of the terms. [8]
In addition to ad spots on SERPs, the major advertising networks allow for contextual ads to be placed on the properties of 3rd-parties with whom they have partnered. These publishers sign up to host ads on behalf of the network. In return, they receive a portion of the ad revenue that the network generates, which can be anywhere from 50% to over 80% of the gross revenue paid by advertisers. These properties are often referred to as a content network and the ads on them as contextual ads because the ad spots are associated with keywords based on the context of the page on which they are found. In general, ads on content networks have a much lower click-through rate (CTR) and conversion rate (CR) than ads found on SERPs and consequently are less highly valued. Content network properties can include websites, newsletters, and e-mails. [9]
Advertisers pay for every single click they receive, with the actual amount paid based on the amount of bid. It is common practice amongst auction hosts to charge a winning bidder just slightly more (e.g. one penny) than the next highest bidder or the actual amount bid, whichever is lower. [10] This avoids situations where bidders are constantly adjusting their bids by very small amounts to see if they can still win the auction while paying just a little bit less per click.
In order to maximize success and achieve scale, automated bid management systems can be deployed. These systems can be used directly by the advertiser, though they are more commonly used by advertising agencies that offer PPC bid management as a service. These tools generally allow for bid management at scale, with thousands or even millions of PPC bids controlled by a highly automated system. The system generally sets each bid based on the goal that has been set for it, such as maximizing profit, maximizing traffic, getting the very targeted customer at break even, and so forth. The system is usually tied into the advertiser's website and fed the results of each click, which then allows it to set bids. The effectiveness of these systems is directly related to the quality and quantity of the performance data that they have to work with — low-traffic ads can lead to a scarcity of data problem that renders many bid management tools useless at worst, or inefficient at best.
As a rule, the contextual advertising system (Google Ads, Yandex.Direct, etc.) uses an auction approach as the advertising payment system.
Several sites claim to be the first PPC model on the web, [11] with many appearing in the mid-1990s. For example, in 1996, the first known and documented version of a PPC was included in a web directory called Planet Oasis. This was a desktop application featuring links to informational and commercial websites, and it was developed by Ark Interface II, a division of Packard Bell NEC Computers. The initial reactions from commercial companies to Ark Interface II's "pay-per-visit" model were skeptical, however. [12] By the end of 1997, over 400 major brands were paying between $.005 to $.25 per click plus a placement fee.[ citation needed ]
In February 1998 Jeffrey Brewer of Goto.com, a 25-employee startup company (later Overture, now part of Yahoo!), presented a pay per click search engine proof-of-concept to the TED conference in California. [13] This presentation and the events that followed created the PPC advertising system. Credit for the concept of the PPC model is generally given to Idealab and Goto.com founder Bill Gross. [14]
Google started search engine advertising in December 1999. It was not until October 2000 that the AdWords system was introduced, allowing advertisers to create text ads for placement on the Google search engine. However, PPC was only introduced in 2002; until then, advertisements were charged at cost-per-thousand impressions or Cost per mille (CPM). Overture has filed a patent infringement lawsuit against Google, saying the rival search service overstepped its bounds with its ad placement tools. [15]
Although GoTo.com started PPC in 1998, Yahoo! did not start syndicating GoTo.com (later Overture) advertisers until November 2001. [16] Prior to this, Yahoo's primary source of SERPs advertising included contextual IAB advertising units (mainly 468x60 display ads). When the syndication contract with Yahoo! was up for renewal in July 2003, Yahoo! announced its intent to acquire Overture for $1.63 billion. [17] Today, companies such as adMarketplace, ValueClick and acknowledge offering PPC services, as an alternative to AdWords and AdCenter.
Among PPC providers, Google Ads (formerly Google AdWords), Microsoft adCenter and Yahoo! Search Marketing had been the three largest network operators, all three operating under a bid-based model. [3] For example, in the year 2014, PPC(AdWords) or online advertising contributed approximately US$45 billion of the total US$66 billion of Google's annual revenue [18] In 2010, Yahoo and Microsoft launched their combined effort against Google, and Microsoft's Bing began to be the search engine that Yahoo used to provide its search results. [19] Since they joined forces, their PPC platform was renamed AdCenter. Their combined network of third-party sites that allow AdCenter ads to populate banner and text ads on their site is called BingAds. [20]
In 2012, Google was initially ruled to have engaged in misleading and deceptive conduct by the Australian Competition & Consumer Commission (ACCC) in possibly the first legal case of its kind. The ACCC ruled that Google was responsible for the content of its sponsored AdWords ads that had shown links to a car sales website Carsales. The ads had been shown by Google in response to a search for Honda Australia. The ACCC said the ads were deceptive, as they suggested Carsales was connected to the Honda company. The ruling was later overturned when Google appealed to the High Court of Australia. Google was found not liable for the misleading advertisements run through AdWords despite the fact that the ads were served up by Google and created using the company's tools. [25]
A common concern amongst advertisers is the practice known as "click fraud". This takes two forms:
Google AdSense is a program run by Google through which website publishers in the Google Network of content sites serve text, images, video, or interactive media advertisements that are targeted to the site content and audience. These advertisements are administered, sorted, and maintained by Google. They can generate revenue on either a per-click or per-impression basis. Google beta-tested a cost-per-action service, but discontinued it in October 2008 in favor of a DoubleClick offering. In Q1 2014, Google earned US$3.4 billion, or 22% of total revenue, through Google AdSense. In 2021, more than 38 million websites used AdSense. It is a participant in the AdChoices program, so AdSense ads typically include the triangle-shaped AdChoices icon. This program also operates on HTTP cookies.
Google Ads formerly known as Google Adwords is an online advertising platform developed by Google, where advertisers bid to display brief advertisements, service offerings, product listings, and videos to web users. It can place ads in the results of search engines like Google Search, mobile apps, videos, and on non-search websites. Services are offered under a pay-per-click (PPC) pricing model, and a cost-per-view (CPV) pricing model.
Click fraud is a type of fraud that occurs on the Internet in pay per click (PPC) online advertising. In this type of advertising, the owners of websites that post the ads are paid based on how many site visitors click on the ads. Fraud occurs when a person, automated script, computer program or an auto clicker imitates a legitimate user of a web browser, clicking on such an ad without having an actual interest in the target of the ad's link in order to increase revenue. Click fraud is the subject of some controversy and increasing litigation due to the advertising networks being a key beneficiary of the fraud.
Yahoo! Native is a native "Pay per click" Internet advertising service provided by Yahoo.
An online advertising network or ad network is a company that connects advertisers to websites that want to host advertisements. The key function of an ad network is an aggregation of ad supply from publishers and matching it with the advertiser's demand. The phrase "ad network" by itself is media-neutral in the sense that there can be a "Television Ad Network" or a "Print Ad Network", but is increasingly used to mean "online ad network" as the effect of aggregation of publisher ad space and sale to advertisers is most commonly seen in the online space. The fundamental difference between traditional media ad networks and online ad networks is that online ad networks use a central ad server to deliver advertisements to consumers, which enables targeting, tracking and reporting of impressions in ways not possible with analog media alternatives.
Online advertising, also known as online marketing, Internet advertising, digital advertising or web advertising, is a form of marketing and advertising that uses the Internet to promote products and services to audiences and platform users. Online advertising includes email marketing, search engine marketing (SEM), social media marketing, many types of display advertising, and mobile advertising. Advertisements are increasingly being delivered via automated software systems operating across multiple websites, media services and platforms, known as programmatic advertising.
Cost per mille (CPM), also called cost per thousand (CPT), is a commonly-used measurement in advertising. It is the cost an advertiser pays for one thousand views or impressions of an advertisement. Radio, television, newspaper, magazine, out-of-home advertising, and online advertising can be purchased on the basis of exposing the ad to one thousand viewers or listeners. It is used in marketing as a benchmarking metric to calculate the relative cost of an advertising campaign or an ad message in a given medium.
Click-through rate (CTR) is the ratio of clicks on a specific link to the number of times a page, email, or advertisement is shown. It is commonly used to measure the success of an online advertising campaign for a particular website, as well as the effectiveness of email campaigns.
Search engine marketing (SEM) is a form of Internet marketing that involves the promotion of websites by increasing their visibility in search engine results pages (SERPs) primarily through paid advertising. SEM may incorporate search engine optimization (SEO), which adjusts or rewrites website content and site architecture to achieve a higher ranking in search engine results pages to enhance pay per click (PPC) listings and increase the Call to action (CTA) on the website.
In web search engines, organic search results are the query results which are calculated strictly algorithmically, and not affected by advertiser payments. They are distinguished from various kinds of sponsored results, whether they are explicit pay per click advertisements, shopping results, or other results where the search engine is paid either for showing the result, or for clicks on the result.
Microsoft Advertising is an online advertising platform developed by Microsoft, where advertisers bid to display brief ads, service offers, product listings and videos to web users. Provides pay per click advertising on search engines Bing, Yahoo! and DuckDuckGo, as well as on other websites, mobile apps, and videos.
A search engine results page (SERP) is a webpage that is displayed by a search engine in response to a query by a user. The main component of a SERP is the listing of results that are returned by the search engine in response to a keyword query.
A domain name auction facilitates the buying and selling of currently registered domain names, enabling individuals to purchase a previously registered domain that suits their needs from an owner wishing to sell. A Drop registrar offers sales of expiring domains; but with a domain auction there is no need to wait until a current owner allows the registration to lapse before purchasing the domain you most want to own. Domain auction sites allow users to search multiple domain names that are listed for sale by owner, and to place bids on the names they want to purchase. As in any auction, the highest bidder wins. The more desirable a domain name, the higher the winning bid, and auction sites often provide links to escrow agents to facilitate the safe transfer of funds and domain properties between the auctioning parties.
Keyword advertising is a form of online advertising in which an advertiser pays to have an advertisement appear in the results listing when a person uses a particular phrase to search the Web, typically by employing a search engine. The particular phrase is composed of one or more key terms that are linked to one or more advertisements. The most common form or keyword advertising, focused on payment methods, is pay per click (PPC), with other forms being cost per action (CPA) or cost per mille (CPM).
In Internet marketing, search advertising is a method of placing online advertisements on web pages that show results from search engine queries. Through the same search-engine advertising services, ads can also be placed on Web pages with other published content.
Website monetization is the process of converting existing traffic being sent to a particular website into revenue. The most popular ways of monetizing a website are by implementing pay per click (PPC) and cost per impression (CPI/CPM) advertising. Various ad networks facilitate a webmaster in placing advertisements on pages of the website to benefit from the traffic the site is experiencing.
Quality Score is a metric used by Google, Yahoo!, Facebook and Bing that influences the ad rank and cost per click (CPC) of ads.
Ad text optimization (ATO) is the process of improving the performance of a text Pay Per Click (PPC) Advertisement on search engines by improving its Click Through Rate (CTR) performance both in terms of volume and quality of response, that is “more buyers, less browsers”. ATO is an element of Search engine optimization, where the subject is discussed in greater detail.
Search syndication is a type of contextual advertising which allows online search advertisers to buy keyword-targeted traffic outside of search engine results pages. This is considered to be an alternative to advertising on search engines, since 43% of all searches occur outside of the top search engines.
Ad fraud is concerned with the practice of fraudulently representing online advertisement impressions, clicks, conversion or data events in order to generate revenue. Ad-frauds are particularly popular among cybercriminals.