{"id":11725,"date":"2019-04-23T13:14:06","date_gmt":"2019-04-23T07:44:06","guid":{"rendered":"https:\/\/www.www.adpushup.com\/blog\/?p=11725"},"modified":"2022-11-16T14:29:25","modified_gmt":"2022-11-16T08:59:25","slug":"cookie-syncing","status":"publish","type":"post","link":"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/","title":{"rendered":"What is Cookie Syncing? And What Challenges do Publishers Face?","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"\n<p class=\"has-background\" style=\"background-color:#caffec\"><em>Cookie syncing: A data matching process to identify users by giving them cookie IDs. But is it as efficient as it sounds? Is there any alternative? Let\u2019s discuss.<\/em><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>In the world of internet, <a href=\"https:\/\/www.adpushup.com\/blog\/types-of-cookies\/\">cookies<\/a> are used to remember everything. These are small codes that collect users\u2019 preferences and information. And then store the data in a name-value (pair) form that is only accessible by the website (publisher).<\/p>\n\n\n\n<p>Cookies are domain-specific, the data collected by a cookie can only be accessed by the parent domain. If you are on abc.com, this means only abc.com can set cookies on your browser. This limited ad industry to share cookie information to run targeted ads. However, adtech had developed a way around this problem by introducing cookie syncing.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-flat ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents:<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#What_is_Cookie_Syncing\" >What is Cookie Syncing?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#How_Does_Cookie_Syncing_Work\" >How Does Cookie Syncing Work?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#Challenges_With_Cookie_Syncing\" >Challenges With Cookie Syncing<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#Is_There_Any_Alternative\" >Is There Any Alternative?<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#FAQs\" >FAQs<\/a><\/li><\/ul><\/nav><\/div>\n<h2 id=\"h-what-is-cookie-syncing\"><span class=\"ez-toc-section\" id=\"What_is_Cookie_Syncing\"><\/span>What is Cookie Syncing?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Cookie syncing, also called cookie matching, is a process of mapping a user from demand-side platform to <a href=\"https:\/\/www.adpushup.com\/blog\/data-management-platform\/\">data management platform<\/a> by giving him\/her a unique ID. Basically, different platforms (SSP, DSP, DMP, publisher, advertiser, and agency) store varied information of a single user. In order to create a detailed user profile, all these platforms work together to identify the user by sharing their data stored for the same user.<\/p>\n\n\n\n<p>Let\u2019s take the simple example of retargeting to understand the need for cookie syncing. Suppose a user likes a pair of shoes on an e-commerce website, adds it to cart but doesn\u2019t make the purchase. Now, that e-commerce website wants to retarget the customer by showing the ad of same shoes ultimately leading to a conversion (purchase). Hence, DSP of this e-commerce website is assigned the task to find the user on web and show him\/her the shoe ad. <\/p>\n\n\n\n<p>Now the user goes on surfing the web and lands on a blogger\u2019s website that runs targeted ads. Then the blogger\u2019s site drops cookies on the user\u2019s browser and quickly recognizes the user as he\/she has visited the blogger\u2019s website before. Quickly, SSP is assigned to show relevant ads to user.<\/p>\n\n\n\n<p>Here we have a DSP looking for the user to show him\/her ad for the pair of shoes. And we also have the SSP looking for a suitable advertiser meaning to show the same user with some relevant ads. But how do DSP and SSP know this is the same user? The answer is cookie syncing.<\/p>\n\n\n\n<p>Cookie syncing is an idea based on providing ad tech with the benefit of better ad targeting. This can be tricky at first. So, let\u2019s move to further understand it better.<\/p>\n\n\n\n<h2 id=\"h-how-does-cookie-syncing-work\"><span class=\"ez-toc-section\" id=\"How_Does_Cookie_Syncing_Work\"><\/span>How Does Cookie Syncing Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>It\u2019s a simple data sharing process. Parties like SSP, DMP, DSP, advertisers, and publishers interested in cookie syncing match the data they have about the users using behavior matching algorithms.<\/p>\n\n\n\n<p>On the basis of similar behavior, users are given identifiers called cookie IDs. Once an ID is established for each user, any information received about that user is shared and saved under that ID by each party.<\/p>\n\n\n\n<p>Using this information, advertisers are able to target users in a real-time auction. Hence, increasing the profit for everyone involved.<\/p>\n\n\n\n<h2 id=\"h-challenges-with-cookie-syncing\"><span class=\"ez-toc-section\" id=\"Challenges_With_Cookie_Syncing\"><\/span>Challenges With Cookie Syncing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Cookie syncing, so far, is a successful technique for audience targeting, but not without challenges. The first challenge is to collect and match the data. Ad ecosystem is huge. Here, finding and matching a user based on the records from so many DSPs, DMPs, publishers, and advertisers can be tedious and troublesome. Moreover, not all <a href=\"https:\/\/www.adpushup.com\/blog\/walled-garden-in-adtech\/\" target=\"_blank\" rel=\"noreferrer noopener\">walled gardens<\/a> are willing to share this data. Meaning, 100% coverage of the online population is difficult in the current situation.<\/p>\n\n\n\n<p>Next, cookie matching is not perfect. Only <a href=\"https:\/\/adexchanger.com\/data-driven-thinking\/ad-tech-needs-a-shared-id-solution-asap\/\">60% of data is correctly matched<\/a>. There are multiple users with the same profile. Similarly, there are also cases where multiple profiles exist for the same user. This means 40% online users&#8217; data is still not being monetized optimally creating a big gap in <a href=\"https:\/\/www.adpushup.com\/blog\/types-of-ad-targeting\/\">audience targeting<\/a> methods.<\/p>\n\n\n\n<p>Also, targeting based on cookie matching is a real-time task. When a user loads a web page, the advertisers look for the user\u2019s cookie ID and then match it with the existing pool of cookie IDs they have stored. If a match is found, the advertisers recognize the user based on the ID and go for the bid, and if the bid is won, creative is placed. Given the number of syncs involved between DSPs, SSPs and DMPs, all this process makes the <a href=\"https:\/\/www.adpushup.com\/blog\/7-ways-to-optimize-your-website-for-faster-ad-serving\/\">ad loading slow<\/a>. The delay is of a few seconds(depending upon the number of parties involved in the sync), and sometimes, it can majorly affect the experience. <\/p>\n\n\n\n<p>Finally, cookies are limited to the only browser-based environment. Hence, they become redundant for app-based targeting. Also, the fact that login services (like Facebook) target their users perfectly in their walled garden. They have no need to coordinate with other ad tech players for the cookie sync. This creates a challenge for rest of marketers to match their level of targeting. <\/p>\n\n\n\n<h2 id=\"h-is-there-any-alternative\"><span class=\"ez-toc-section\" id=\"Is_There_Any_Alternative\"><\/span>Is There Any Alternative?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Yes, initiatives like the advertising ID consortium and Digitrust (now acquired by IAB tech Lab) are <a href=\"https:\/\/www.adidentity.org\/\">designed to offer people-based identifier<\/a>. This is done by leveraging cookie data from every possible source (demand-side, supply-side, advertisers, and publishers). The intent is to create a standard platform for audience targeting.<\/p>\n\n\n\n<p>The problem with cookie syncing is, one user is identified using many ID\u2019s causing data fragmentation and loss. Consequently, the targeting is limited and creates a poor user experience. However, implementing advertising ID consortium at scale can solve such issues. Here, the advertising ID consortium aims to solve the sync issue by:<\/p>\n\n\n\n<div class=\"schema-how-to wp-block-yoast-how-to-block\"><p class=\"schema-how-to-description\"><\/p> <ol class=\"schema-how-to-steps\"><li class=\"schema-how-to-step\" id=\"how-to-step-1668588796717\"><strong class=\"schema-how-to-step-name\">Creating a standard cookie ID and device ID.<\/strong> <p class=\"schema-how-to-step-text\"><\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1668588805472\"><strong class=\"schema-how-to-step-name\">Identifying users rather than their devices or browsers.<\/strong> <p class=\"schema-how-to-step-text\"><\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1668588819475\"><strong class=\"schema-how-to-step-name\">Creating an interconnected channel for ad tech to share data while ensuring security of user data.<\/strong> <p class=\"schema-how-to-step-text\"><\/p> <\/li><li class=\"schema-how-to-step\" id=\"how-to-step-1668588833616\"><strong class=\"schema-how-to-step-name\">Getting every member of the consortium to respect the privacy of user data and protect it at every cost.<\/strong> <p class=\"schema-how-to-step-text\"><\/p> <\/li><\/ol><\/div>\n\n\n\n<p>Talking about privacy, there is still a need to keep data privacy laws (<a href=\"https:\/\/www.adpushup.com\/blog\/a-gdpr-checklist-for-those-who-are-tired-of-gdpr-checklists\/\">GDPR<\/a> and <a href=\"https:\/\/www.adpushup.com\/blog\/california-consumer-privacy-act-ccpa\/\">CCPA<\/a>) in mind while drafting the future of cookie syncing and targeting. Creating a standard ID for users around the globe, where one can access user\u2019s data for targeting, sounds too good to be real. However, this is something most marketers are looking forward to in the next couple of years. <\/p>\n\n\n\n<h2 id=\"h-faqs\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQs<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1668588886698\"><strong class=\"schema-faq-question\">1. What is Cookie Syncing?<\/strong> <p class=\"schema-faq-answer\">Cookies are synchronized between the ad-tech partners (SSPs, DMPs, CDPs, and DSPs) in order to share the incorporated data from different websites with one another. By doing so, DSPs can gather information about the user (interests, demographics, location, etc.).<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1668588966972\"><strong class=\"schema-faq-question\">2. What is DSP cookie?<\/strong> <p class=\"schema-faq-answer\">An advertising technology platform (e.g. a DSP) receives an ad request from the browser every time a user visits a website containing ads (or third-party tracking tags). If there is no unique user ID already in place, the DSP creates one and stores it in a cookie.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1668589018466\"><strong class=\"schema-faq-question\">3. How do you sync cookies in Chrome?<\/strong> <p class=\"schema-faq-answer\">Select the Interceptor option under the Sync Cookies tab in the Cookies window. Make sure you receive the message Connected. Make sure your Chrome browser is open and the Interceptor extension is installed if you get the message Disconnected. Select one or more domains.<\/p> <\/div> <\/div>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>Cookie syncing: A data matching process to identify users by giving them cookie IDs. But is it as efficient as it sounds? Is there any alternative? Let\u2019s discuss. In the world of internet, cookies are used to remember everything. These are small codes that collect users\u2019 preferences and information. And then store the data in<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":18,"featured_media":11726,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","om_disable_all_campaigns":false,"inline_featured_image":false,"apple_news_api_created_at":"2019-04-23T07:45:26Z","apple_news_api_id":"1b97914e-6b90-4399-beb9-6e07271a35ce","apple_news_api_modified_at":"2019-05-02T07:55:25Z","apple_news_api_revision":"AAAAAAAAAAAAAAAAAAAAAQ==","apple_news_api_share_url":"https:\/\/apple.news\/AG5eRTmuQQ5m-uW4HJxo1zg","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"middle","apple_news_slug":"","apple_news_sections":"[\"https:\\\/\\\/news-api.apple.com\\\/sections\\\/2384f969-0b7d-3e23-907b-d8b4b94ce6f8\"]"},"categories":[6440],"tags":[6422],"apple_news_notices":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v18.5 (Yoast SEO v18.9) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Cookie Syncing? What Challenges do Publishers Face?<\/title>\n<meta name=\"description\" content=\"Cookie syncing: A data matching process to identify users by giving them cookie IDs. But is it as efficient as it sounds? Is there any alternative? Let\u2019s discuss.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:title\" content=\"What is Cookie Syncing? What Challenges do Publishers Face?\" \/>\n<meta name=\"twitter:description\" content=\"Cookie syncing: A data matching process to identify users by giving them cookie IDs. But is it as efficient as it sounds? Is there any alternative? Let\u2019s discuss.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.adpushup.com\/blog\/wp-content\/uploads\/2019\/04\/Cookie-Syncing.jpg\" \/>\n<meta name=\"twitter:creator\" content=\"@adpushup\" \/>\n<meta name=\"twitter:site\" content=\"@adpushup\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Shubham Grover\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.adpushup.com\/blog\/#organization\",\"name\":\"AdPushup\",\"url\":\"https:\/\/www.adpushup.com\/blog\/\",\"sameAs\":[\"https:\/\/www.linkedin.com\/company\/adpushup\/\",\"https:\/\/www.facebook.com\/AdPushup\/\",\"https:\/\/twitter.com\/adpushup\"],\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.adpushup.com\/blog\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.adpushup.com\/blog\/wp-content\/uploads\/2019\/02\/AdPushup-logo.png\",\"contentUrl\":\"https:\/\/www.adpushup.com\/blog\/wp-content\/uploads\/2019\/02\/AdPushup-logo.png\",\"width\":3294,\"height\":893,\"caption\":\"AdPushup\"},\"image\":{\"@id\":\"https:\/\/www.adpushup.com\/blog\/#\/schema\/logo\/image\/\"}},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.adpushup.com\/blog\/#website\",\"url\":\"https:\/\/www.adpushup.com\/blog\/\",\"name\":\"AdPushup Blog\",\"description\":\"A\/B Testing, Monetization &amp; Ad Optimization\",\"publisher\":{\"@id\":\"https:\/\/www.adpushup.com\/blog\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.adpushup.com\/blog\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#primaryimage\",\"url\":\"https:\/\/www.adpushup.com\/blog\/wp-content\/uploads\/2019\/04\/Cookie-Syncing.jpg\",\"contentUrl\":\"https:\/\/www.adpushup.com\/blog\/wp-content\/uploads\/2019\/04\/Cookie-Syncing.jpg\",\"width\":1024,\"height\":768,\"caption\":\"what is cookie syncing\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#webpage\",\"url\":\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/\",\"name\":\"What is Cookie Syncing? 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He has vast experience in the programmatic industry, driving business strategy and scaling functions including but not limited to growth and marketing, Operations, process optimization, and Sales.\",\"url\":\"https:\/\/www.adpushup.com\/blog\/author\/shubham\/\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#faq-question-1668588886698\",\"position\":1,\"url\":\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#faq-question-1668588886698\",\"name\":\"1. What is Cookie Syncing?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Cookies are synchronized between the ad-tech partners (SSPs, DMPs, CDPs, and DSPs) in order to share the incorporated data from different websites with one another. By doing so, DSPs can gather information about the user (interests, demographics, location, etc.).\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#faq-question-1668588966972\",\"position\":2,\"url\":\"https:\/\/www.adpushup.com\/blog\/cookie-syncing\/#faq-question-1668588966972\",\"name\":\"2. What is DSP cookie?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"An advertising technology platform (e.g. a DSP) receives an ad request from the browser every time a user visits a website containing ads (or third-party tracking tags). 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