{"id":20239,"date":"2020-01-29T15:51:36","date_gmt":"2020-01-29T15:51:36","guid":{"rendered":"https:\/\/www.arimetrics.com\/glosario-digital\/programmatic-buying"},"modified":"2026-09-23T20:45:23","modified_gmt":"2026-09-23T20:45:23","slug":"programmatic-buying","status":"publish","type":"encyclopedia","link":"https:\/\/www.arimetrics.com\/en\/digital-glossary\/programmatic-buying","title":{"rendered":"Programmatic Buying"},"content":{"rendered":"<p><img decoding=\"async\" class=\"boxpad alignright wp-image-23030 size-full\" src=\"https:\/\/www.arimetrics.com\/wp-content\/uploads\/2021\/11\/programmatic-buying.jpg\" alt=\"Programmatic Buying\" width=\"300\" height=\"300\" srcset=\"https:\/\/www.arimetrics.com\/wp-content\/uploads\/2021\/11\/programmatic-buying.jpg 300w, https:\/\/www.arimetrics.com\/wp-content\/uploads\/2021\/11\/programmatic-buying-150x150.jpg 150w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><strong>Definition:<\/strong><\/p>\n<p><strong>Programmatic buying<\/strong> is the automated purchase of digital advertising space through platforms that use data, campaign rules and bidding or negotiated mechanisms to decide which advertisement may fill each available impression.<\/p>\n\n<p>Also described as programmatic advertising when referring to the wider ecosystem, it is not limited to real-time auctions. It can include open inventory, private deals and guaranteed transactions with an agreed price and volume. It is used in display, video, audio, connected television and digital out-of-home advertising, among other environments.<\/p>\n<h2>How programmatic buying works<\/h2>\n<p>The process connects the inventory supplied by media owners with demand from advertisers and agencies. Although the architecture varies by channel and deal, an impression commonly passes through these stages:<\/p>\n<ol>\n<li><strong>An advertising opportunity is generated:<\/strong> a website, app or other medium requests an advertisement when space is available.<\/li>\n<li><strong>Permitted signals are sent:<\/strong> the request may include page or app context, format, device, approximate location, deal conditions and available audience signals with the corresponding legal basis or consent.<\/li>\n<li><strong>The impression is evaluated:<\/strong> buying platforms compare the opportunity with campaign targeting, budget, frequency, creative and other rules.<\/li>\n<li><strong>An offer is selected:<\/strong> allocation may be resolved through an auction, a negotiated price or a guaranteed reservation.<\/li>\n<li><strong>The advertisement is served and recorded:<\/strong> the winning creative is delivered to the medium and systems collect events for billing, control and measurement.<\/li>\n<\/ol>\n<p>These automated exchanges are generally completed while the content loads. An <a href=\"https:\/\/www.arimetrics.com\/en\/digital-glossary\/ad-server\">Ad Server<\/a> takes part in creative delivery, tracking and rotation, but it does not replace the platforms used to buy or sell inventory.<\/p>\n<h2>Programmatic buying methods<\/h2>\n<p>Automation can be combined with different degrees of access, negotiation and guarantee:<\/p>\n<ul>\n<li><strong>Open auction:<\/strong> several buyers compete for available impressions. When each opportunity is decided in real time, the process uses <a href=\"https:\/\/www.arimetrics.com\/en\/digital-glossary\/rtb\">RTB<\/a>.<\/li>\n<li><strong>Private marketplace:<\/strong> a group of invited buyers can access inventory and terms that the publisher does not offer in the open auction.<\/li>\n<li><strong>Preferred deal:<\/strong> buyer and seller agree a price and preferential access but generally do not guarantee a specific impression volume.<\/li>\n<li><strong>Programmatic guaranteed:<\/strong> the parties agree the price, inventory, dates and volume, while technology automates the reserved transaction.<\/li>\n<\/ul>\n<p>These methods do not form a single scale of quality. A private deal may provide greater control over the media environment, while an open auction may offer broader reach. The method also affects availability, transparency and how cost is determined.<\/p>\n<h2>Participants and platforms<\/h2>\n<p>The programmatic chain can bring together several specialist systems. Not every transaction requires every intermediary:<\/p>\n<ul>\n<li><strong>Advertiser and agency:<\/strong> define objectives, budget, audiences, creatives, frequency limits and quality criteria.<\/li>\n<li><strong>DSP:<\/strong> enables buyers to evaluate inventory from different sources and submit offers according to campaign rules.<\/li>\n<li><strong>Publisher and SSP:<\/strong> the publisher supplies advertising space, while the SSP manages its availability, price floors and buyer access.<\/li>\n<li><strong>Ad Exchange:<\/strong> provides market infrastructure that connects supply and demand and resolves transactions. Its role is covered further under <a href=\"https:\/\/www.arimetrics.com\/en\/digital-glossary\/ad-exchange\">Ad Exchange<\/a>.<\/li>\n<li><strong>Support services:<\/strong> verification, measurement, fraud prevention, consent management and data tools may participate depending on the setup.<\/li>\n<\/ul>\n<p>The route followed by an impression is known as the <em>supply path<\/em>. A chain with many intermediaries can make costs and resellers harder to identify, so transparency depends on the information supplied by each participant and the standards they support.<\/p>\n<h2>Pricing and measurement<\/h2>\n<p>The price is not always equal to the buyer&#8217;s maximum bid. An auction can take into account its pricing model, competing offers, the publisher&#8217;s floor price, deal rules and platform fees. Direct or guaranteed transactions may instead use a negotiated fixed price.<\/p>\n<p><a href=\"https:\/\/www.arimetrics.com\/en\/digital-glossary\/cpm\">CPM<\/a> is commonly used to express cost per thousand impressions, but it does not describe campaign results by itself. Evaluation may combine:<\/p>\n<ul>\n<li><strong>Delivery:<\/strong> impressions served, reach, frequency and spend.<\/li>\n<li><strong>Inventory quality:<\/strong> viewability, context, ad placement, invalid traffic and suitability of the medium.<\/li>\n<li><strong>Response:<\/strong> clicks, video plays, visits, conversions and other defined actions.<\/li>\n<li><strong>Efficiency:<\/strong> CPM, cost per outcome, attributed value and differences between advertiser spend and publisher revenue.<\/li>\n<\/ul>\n<p>Metrics come from different systems and may vary because of attribution, time windows, deduplication or filtering. Programmatic buying automates decisions and transactions, but it does not remove these measurement differences.<\/p>\n<h2>Benefits and limitations<\/h2>\n<p>Programmatic buying expands the operational capacity of digital advertising, although its results depend on the quality of data, inventory and controls:<\/p>\n<ul>\n<li><strong>Scale and speed:<\/strong> large volumes of opportunities can be assessed across multiple media owners and formats.<\/li>\n<li><strong>Rule-based decisions:<\/strong> budget, context, audience, frequency and creative can inform each decision.<\/li>\n<li><strong>Continuous optimization:<\/strong> allocation can change according to delivery and observed campaign results.<\/li>\n<li><strong>Limited transparency:<\/strong> fees, resellers and complex supply paths can obscure how much is paid and where the advertisement appears.<\/li>\n<li><strong>Quality and safety:<\/strong> fraud, low viewability, unsuitable placements and spoofed domains require verification and brand controls.<\/li>\n<li><strong>Privacy:<\/strong> the use of identifiers and audience signals is constrained by regulation, consent, platform policies and data availability.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.arimetrics.com\/en\/digital-glossary\/display-advertising\">Display advertising<\/a> is one of its established uses, but the concepts are not equivalent: display describes an advertising format, while programmatic describes a trading method that can also be used in other channels.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Programmatic buying automates digital advertising purchases. Learn how it works, its deal types, platforms, pricing and main limitations.<\/p>\n","protected":false},"author":6,"featured_media":0,"template":"","encyclopedia-tag":[1232],"class_list":["post-20239","encyclopedia","type-encyclopedia","status-publish","hentry","encyclopedia-tag-programmatic-advertising"],"_links":{"self":[{"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/encyclopedia\/20239","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/encyclopedia"}],"about":[{"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/types\/encyclopedia"}],"author":[{"embeddable":true,"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/users\/6"}],"wp:attachment":[{"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/media?parent=20239"}],"wp:term":[{"taxonomy":"encyclopedia-tag","embeddable":true,"href":"https:\/\/www.arimetrics.com\/en\/wp-json\/wp\/v2\/encyclopedia-tag?post=20239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}