{"id":81729,"date":"2024-09-11T07:34:00","date_gmt":"2024-09-11T07:34:00","guid":{"rendered":"https:\/\/adjoe.io\/?post_type=glossary&#038;p=81729"},"modified":"2025-11-06T16:20:53","modified_gmt":"2025-11-06T16:20:53","slug":"what-is-ad-inventory-mobile","status":"publish","type":"glossary","link":"https:\/\/adjoe.io\/zh-tw\/glossary\/what-is-ad-inventory-mobile\/","title":{"rendered":"Ad Inventory"},"content":{"rendered":"\n<div class=\"glossary-description\">\n\t\t<div class=\"glossary-description__wrapper\">\n              <h1 class=\"glossary-description__title\">\n          What Is Ad Inventory?\n        <\/h1>\n      \t\t\t<div class=\"glossary-description__icon\"><\/div>\n\t\t\t<div class=\"glossary-description__text\">\n\t\t\t\tMobile ad inventory is the digital ad space a publisher has available to sell to advertisers \u2013 either on their mobile website or app. <br><br>This inventory is mostly made available and sold automatically through ad exchanges or marketplaces by means of programmatic advertising.\n\t\t\t<\/div>\n\t\t<\/div>\n<\/div>\n\n\n\n<div class=\"glossary-takeaways\">\n\t<div class=\"container\">\n\t\t<div class=\"glossary-takeaways__wrapper\">\n\t\t\t<div class=\"glossary-takeaways__title\">\n\t\t\t\tKey Takeaways\n\t\t\t<\/div>\n\t\t\t<div class=\"glossary-takeaways__text\">\n\t\t\t\t<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ad space is usually bought and sold via real-time bidding<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Mobile ad inventory<\/strong> could include video, audio, banner, and display ads<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">This ad space is normally valued based on metrics such as impressions, active users, and fill rate <\/span><\/li>\n<\/ul>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">How Is Ad Inventory Bought and Sold?<\/h2>\n\n\n\n<p><strong>Mobile ad inventory<\/strong> can comprise multiple ad formats and types, such as video, audio, display, <a href=\"https:\/\/adjoe.io\/glossary\/mobile-banner-ads\/\" target=\"_blank\" rel=\"noreferrer noopener\">banner<\/a>, and native ads.\u00a0<\/p>\n\n\n\n<p>This mobile ad space is usually bought and sold through automated technology in real time. This ensures more efficient inventory management for both advertisers and publishers. We call this process \u201creal-time bidding,\u201d whereby various advertisers bid on a publisher\u2019s available ad space, and the auction winner wins the ad placement.<\/p>\n\n\n\n<p>In many cases, the process will look something like this.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"849\" src=\"https:\/\/adjoe.io\/app\/uploads\/2024\/09\/Ad-inventory-buying-and-selling-1024x849.png\" alt=\"Mobile ad inventory - definition and diagram showing how ad inventory is bought and sold\" class=\"wp-image-84061\" style=\"width:710px\" srcset=\"https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/Ad-inventory-buying-and-selling-1024x849.png 1024w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/Ad-inventory-buying-and-selling-300x249.png 300w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/Ad-inventory-buying-and-selling-768x637.png 768w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/Ad-inventory-buying-and-selling-1536x1274.png 1536w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/Ad-inventory-buying-and-selling.png 1875w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How Is the Publisher Ad Inventory Valued?<\/h2>\n\n\n\n<p>The value and cost of a publisher\u2019s inventory is determined by several factors:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/adjoe.io\/glossary\/ad-impressions\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ad impressions<\/a> on a mobile website or app \u2013 how many users does a typical ad in this space reach?<\/li>\n\n\n\n<li><a href=\"https:\/\/adjoe.io\/glossary\/ad-fill-rate\/\" target=\"_blank\" rel=\"noreferrer noopener\">Fill rate<\/a> \u2013 how much of a publisher\u2019s ad space is still available (unsold)? A higher fill rate is better for publishers, as it means they are making more money from this ad space.<\/li>\n\n\n\n<li>Revenue model \u2013 the advertiser only has to pay the publisher once mobile users have completed certain actions, such as clicks, installs (<a href=\"https:\/\/adjoe.io\/glossary\/cost-per-install-cpi\/\" target=\"_blank\" rel=\"noreferrer noopener\">CPI<\/a>), or ad impressions (<a href=\"https:\/\/adjoe.io\/glossary\/cost-per-mille-cpm\/\" target=\"_blank\" rel=\"noreferrer noopener\">CPM<\/a>).<\/li>\n<\/ul>\n\n\n\n<p>The volume of users a publisher can bring to advertisers is also a crucial piece of the puzzle \u2013 this is why the number of <a href=\"https:\/\/adjoe.io\/glossary\/daily-active-users-dau\/\" target=\"_blank\" rel=\"noreferrer noopener\">daily active users<\/a> or monthly active users can also impact the value of mobile ad inventory.&nbsp;<\/p>\n\n\n\n<p>Other factors that might further influence the value of mobile ad space include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Premium inventory<\/strong> \u2013 this is high-quality mobile ad space that is more likely to bring advertisers a greater volume of higher-quality users. Advertisers ideally want direct access to this \u2013 simplified supply chains bring advertisers closer to this inventory.<\/li>\n\n\n\n<li><strong>Demographic targeting<\/strong> \u2013 some advertisers want to pay publishers more if their ad space will help them reach a specific target audience more effectively.&nbsp;<\/li>\n\n\n\n<li><strong>Ad location<\/strong> \u2013 ad placements within an app also determine the price of ad space; some placements are far more visible to app users than others (for example, on the home page).&nbsp;<\/li>\n\n\n\n<li><strong>Ad format<\/strong> \u2013 some formats cost more because they are more visible to users, such as video ads.&nbsp;<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"896\" src=\"https:\/\/adjoe.io\/app\/uploads\/2024\/09\/How-ad-inventory-is-valued-1024x896.png\" alt=\"What is ad inventory in mobile apps? Mobile ad inventory definition \" class=\"wp-image-84064\" style=\"width:710px\" srcset=\"https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/How-ad-inventory-is-valued-1024x896.png 1024w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/How-ad-inventory-is-valued-300x262.png 300w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/How-ad-inventory-is-valued-768x672.png 768w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/How-ad-inventory-is-valued-1536x1343.png 1536w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/How-ad-inventory-is-valued.png 1875w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Why Is Ad Inventory Important?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">For Publishers<\/h3>\n\n\n\n<p>Publishers can determine how great or low their revenue potential is from selling their mobile ad inventory. The higher quality their ad space, or the more ad space they are likely to sell, the more revenue they can generate because their ad space is what mobile advertisers want to pay a lot for.&nbsp;<\/p>\n\n\n\n<p>It\u2019s therefore important for publishers to have an impressive number of daily active users. With this reputation, they can sell their ad space at a higher price.&nbsp;<\/p>\n\n\n\n<p>App publishers do, however, need to consider the number of ads they serve users in their app. Too many ads and they could alienate users and cause them to churn. They must therefore strike the right balance between monetizing the mobile ad space available in their app and delivering a positive user experience.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"806\" src=\"https:\/\/adjoe.io\/app\/uploads\/2024\/09\/priorities-for-ad-inventory-1024x806.png\" alt=\"Publisher - mobile ad inventory for publishers\" class=\"wp-image-84479\" style=\"width:710px\" srcset=\"https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/priorities-for-ad-inventory-1024x806.png 1024w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/priorities-for-ad-inventory-300x236.png 300w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/priorities-for-ad-inventory-768x604.png 768w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/priorities-for-ad-inventory-1536x1208.png 1536w, https:\/\/adjoe.io\/wp-content\/uploads\/2024\/09\/priorities-for-ad-inventory.png 1875w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">For Advertisers<\/h3>\n\n\n\n<p>It goes without saying that a publisher\u2019s ad space must be relevant to the traffic advertisers want to connect with most. Advertisers want the mobile users viewing their ad inside a publisher\u2019s app to convert and deliver a high <a href=\"https:\/\/adjoe.io\/glossary\/roas\/\" target=\"_blank\" rel=\"noreferrer noopener\">return on ad spend<\/a>. If the publisher app isn\u2019t relevant, it is unlikely that users will convert after seeing their ad.<\/p>\n\n\n\n<p>Besides inventory that is relevant for their target audience, advertisers buying inventory will often prioritize brand safety. They need assurance that their brand image will not suffer negatively as a result of where they place their ad.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p>The goal for publishers is to increase the value of their mobile ad inventory \u2013 which they can do by monitoring and optimizing the following components: impressions, fill rate, user engagement, and ad format diversity.<\/p>\n\n\n\n<p>Advertisers meanwhile should prioritize ad space that aligns with their target audience and maintains brand safety. This way, they can enjoy quality and scale when bidding competitively on ad inventory.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1707917872812\"><strong class=\"schema-faq-question\">What Is Ad Inventory?<br\/><\/strong> <p class=\"schema-faq-answer\"><strong>Mobile ad inventory<\/strong> is the ad space a publisher has available to sell to advertisers. This is either on their mobile website or app.<br\/><br\/><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1707917896473\"><strong class=\"schema-faq-question\">How Is Mobile Ad Inventory Bought and Sold?<br\/><\/strong> <p class=\"schema-faq-answer\">This inventory is mostly sold automatically through <a href=\"https:\/\/adjoe.io\/glossary\/what-is-an-ad-exchange\/\" target=\"_blank\" rel=\"noreferrer noopener\">ad exchanges<\/a> by means of programmatic advertising.<br\/><br\/><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1707917927765\"><strong class=\"schema-faq-question\">Why Is Ad Space Important?<br\/><\/strong> <p class=\"schema-faq-answer\">Publishers can determine from their mobile ad inventory how great or low their revenue potential is from selling ads. For advertisers, mobile ad inventory must be relevant to the users advertisers want to connect with most.<br\/><br\/><br\/><\/p> <\/div> <\/div>\n\n\n\n<p><\/p>\n","protected":false},"author":6,"featured_media":83692,"menu_order":0,"template":"","ppma_author":[51,50],"class_list":["post-81729","glossary","type-glossary","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ad Inventory 101: Definition - Mobile Marketing Glossary<\/title>\n<meta name=\"description\" content=\"What is ad inventory? Ad inventory is the total amount of ad space a publisher puts up for sale. 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This is either on their mobile website or app.<br\/><br\/>","inLanguage":"zh"},"inLanguage":"zh"},{"@type":"Question","@id":"https:\/\/adjoe.io\/zh-tw\/glossary\/what-is-ad-inventory-mobile\/#faq-question-1707917896473","position":2,"url":"https:\/\/adjoe.io\/zh-tw\/glossary\/what-is-ad-inventory-mobile\/#faq-question-1707917896473","name":"How Is Mobile Ad Inventory Bought and Sold?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"This inventory is mostly sold automatically through <a href=\"https:\/\/adjoe.io\/glossary\/what-is-an-ad-exchange\/\" target=\"_blank\" rel=\"noreferrer noopener\">ad exchanges<\/a> by means of programmatic advertising.<br\/><br\/>","inLanguage":"zh"},"inLanguage":"zh"},{"@type":"Question","@id":"https:\/\/adjoe.io\/zh-tw\/glossary\/what-is-ad-inventory-mobile\/#faq-question-1707917927765","position":3,"url":"https:\/\/adjoe.io\/zh-tw\/glossary\/what-is-ad-inventory-mobile\/#faq-question-1707917927765","name":"Why Is Ad Space Important?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Publishers can determine from their mobile ad inventory how great or low their revenue potential is from selling ads. For advertisers, mobile ad inventory must be relevant to the users advertisers want to connect with most.<br\/><br\/><br\/>","inLanguage":"zh"},"inLanguage":"zh"}]}},"_links":{"self":[{"href":"https:\/\/adjoe.io\/zh-tw\/wp-json\/wp\/v2\/glossary\/81729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/adjoe.io\/zh-tw\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/adjoe.io\/zh-tw\/wp-json\/wp\/v2\/types\/glossary"}],"author":[{"embeddable":true,"href":"https:\/\/adjoe.io\/zh-tw\/wp-json\/wp\/v2\/users\/6"}],"version-history":[{"count":0,"href":"https:\/\/adjoe.io\/zh-tw\/wp-json\/wp\/v2\/glossary\/81729\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/adjoe.io\/zh-tw\/wp-json\/wp\/v2\/media\/83692"}],"wp:attachment":[{"href":"https:\/\/adjoe.io\/zh-tw\/wp-json\/wp\/v2\/media?parent=81729"}],"wp:term":[{"taxonomy":"author","embeddable":true,"href":"https:\/\/adjoe.io\/zh-tw\/wp-json\/wp\/v2\/ppma_author?post=81729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}