{"id":11207,"date":"2025-11-11T13:18:02","date_gmt":"2025-11-11T07:48:02","guid":{"rendered":"https:\/\/easyinsights.ai\/blog\/?p=11207"},"modified":"2025-11-18T12:00:40","modified_gmt":"2025-11-18T06:30:40","slug":"evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained","status":"publish","type":"post","link":"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/","title":{"rendered":"The Evolution of Apple\u2019s SKAdNetwork (SKAN): From SKAN 1 to SKAN 4 Explained"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"536\" src=\"https:\/\/easyinsights.ai\/easyinsights_wordpress\/wp-content\/uploads\/2025\/11\/1200x628-10-2-1024x536.jpg\" alt=\"x ()\" class=\"wp-image-11209\" srcset=\"https:\/\/easyinsights.ai\/easyinsights_wordpress\/wp-content\/uploads\/2025\/11\/1200x628-10-2-1024x536.jpg 1024w, https:\/\/easyinsights.ai\/easyinsights_wordpress\/wp-content\/uploads\/2025\/11\/1200x628-10-2-300x157.jpg 300w, https:\/\/easyinsights.ai\/easyinsights_wordpress\/wp-content\/uploads\/2025\/11\/1200x628-10-2-768x402.jpg 768w, https:\/\/easyinsights.ai\/easyinsights_wordpress\/wp-content\/uploads\/2025\/11\/1200x628-10-2-1536x804.jpg 1536w, https:\/\/easyinsights.ai\/easyinsights_wordpress\/wp-content\/uploads\/2025\/11\/1200x628-10-2-2048x1072.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>In the era of privacy-first marketing, <strong>Apple\u2019s SKAdNetwork (SKAN)<\/strong> has completely reshaped mobile attribution.<\/p>\n\n\n\n<p>Since its debut in 2018, SKAN has evolved from basic install reporting to a sophisticated, multi-postback framework that helps advertisers measure performance &#8211; all without compromising user privacy.<\/p>\n\n\n\n<p>In this post, we\u2019ll walk through <strong>how SKAN evolved from version 1 to 4<\/strong>, explain key concepts like <strong>postbacks<\/strong> and <strong>conversion values<\/strong>, and look ahead at what\u2019s next with <strong>AdAttributionKit<\/strong>.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 ez-toc-wrap-center counter-hierarchy 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\">Jump ahead to:<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#What_Is_SKAdNetwork\" >What Is SKAdNetwork?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#%E2%80%8B%E2%80%8BWhy_Apple_Introduced_SKAdNetwork\" >\u200b\u200bWhy Apple Introduced SKAdNetwork<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#What_Is_a_Postback\" >What Is a Postback?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#What_Is_a_Conversion_Value\" >What Is a Conversion Value?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#SKAN_1_The_Beginning_of_Privacy-First_Attribution\" >SKAN 1: The Beginning of Privacy-First Attribution<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#SKAN_2_The_Start_of_Post-Install_Insights\" >SKAN 2: The Start of Post-Install Insights<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#SKAN_3_More_Stability_and_Refinement\" >SKAN 3: More Stability and Refinement<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#SKAN_4_A_Major_Leap_Forward\" >SKAN 4: A Major Leap Forward<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#Whats_New_in_SKAN_4\" >What\u2019s New in SKAN 4<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#Beyond_SKAN_4_Introducing_AdAttributionKit_AAK\" >Beyond SKAN 4: Introducing AdAttributionKit (AAK)<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#SKAN_Evolution_Summary\" >SKAN Evolution Summary<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#What_Marketers_and_Developers_Should_Do_Now\" >What Marketers and Developers Should Do Now<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"#\" data-href=\"https:\/\/easyinsights.ai\/blog\/evolution-of-apple-skadnetwork-from-skan-1-to-skan-4-explained\/#Final_Thoughts\" >Final Thoughts<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_SKAdNetwork\"><\/span><strong>What Is SKAdNetwork?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>SKAdNetwork (SKAN)<\/strong> is Apple\u2019s privacy-preserving system for <strong>tracking app installs and in-app engagement<\/strong> &#8211; without using device identifiers like the <strong>IDFA<\/strong>.<\/p>\n\n\n\n<p>Instead of tracking users individually, SKAN works with <strong>aggregated signals<\/strong>. When a user installs an app after viewing or clicking an ad, Apple sends a <strong>postback<\/strong> (an anonymized report) to the ad network.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E2%80%8B%E2%80%8BWhy_Apple_Introduced_SKAdNetwork\"><\/span>\u200b\u200b<strong>Why Apple Introduced SKAdNetwork<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Apple introduced SKAdNetwork as part of its broader <strong>privacy protection strategy<\/strong>.<\/p>\n\n\n\n<p>Before SKAN, most mobile attribution relied on tracking individual users through identifiers like the <strong>IDFA (Identifier for Advertisers)<\/strong>. This meant ad networks could see exactly which users installed an app, what they did afterward, and even combine that data with other tracking systems.<\/p>\n\n\n\n<p>As privacy concerns and regulations like the <strong>GDPR<\/strong> and <strong>CCPA<\/strong> grew, Apple made a clear move toward <strong>user data minimization<\/strong>.<\/p>\n\n\n\n<p>By launching SKAdNetwork, Apple aimed to:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Protect user identity<\/strong> while still allowing advertisers to measure performance<br><\/li>\n\n\n\n<li><strong>Eliminate device-level tracking<\/strong> without breaking the mobile ad ecosystem<br><\/li>\n\n\n\n<li><strong>Encourage privacy-centric innovation<\/strong> from ad networks and analytics partners<\/li>\n<\/ul>\n\n\n\n<p>In short, SKAN is Apple\u2019s solution to balancing <strong>advertiser needs<\/strong> with <strong>user trust<\/strong> &#8211; a middle ground between total anonymity and meaningful performance insights.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_a_Postback\"><\/span><strong>What Is a Postback?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-text-color has-background has-link-color wp-elements-35a9bb1e2def0f461200abf8c5625082\" style=\"color:#2c01ca;background-color:#e2dff4\">A <strong>postback<\/strong> is Apple\u2019s way of telling ad networks that an install has occurred &#8211; while keeping the user\u2019s identity private. <br><br>Each postback contains:<br><br>&#8211; <mark style=\"background-color:rgba(0, 0, 0, 0);color:#2c01ca\" class=\"has-inline-color\">The <strong>campaign or ad network ID<\/strong><\/mark><br>&#8211; <mark style=\"background-color:rgba(0, 0, 0, 0);color:#2c01ca\" class=\"has-inline-color\">A <strong>conversion value<\/strong> (representing what the user did in-app)<\/mark><br>&#8211; An approximate timestamp window<br><br>In SKAN 1\u20133, Apple sent <strong>only one postback per install<\/strong>.<br><br>With <strong>SKAN 4<\/strong>, Apple introduced <strong>up to three postbacks<\/strong>, sent at different time windows (day 0-2, 3-7, and 8-35). This helps advertisers track <strong>short-term and long-term user engagement<\/strong> without violating privacy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_a_Conversion_Value\"><\/span><strong>What Is a Conversion Value?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"has-text-color has-background has-link-color wp-elements-6c86945c0b1460a22aef299bad109e9e\" style=\"color:#2c01ca;background-color:#e2dff4\">A conversion value is a small number &#8211; between 0 and 63 that represents a user\u2019s post-install activity.<br>Apple gives developers 6 bits of data (64 possible values).<br><br>You can assign each value to key events in your app, such as:<br>&#8211; 0 = Opened the app<br>&#8211; 10 = Completed tutorial<br>&#8211; 40 = Made a purchase<br><br>Since Apple limits how long conversion values can be updated (usually within the first day or so), you must design your conversion schema strategically to capture your most valuable user actions early.<br><br>In SKAN 4, Apple introduced an extra layer:<br><br>&#8211; Fine-grained values (0\u201363) when enough data is available<br>&#8211; Coarse-grained values (Low \/ Medium \/ High) when there isn\u2019t enough traffic for detailed reporting<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SKAN_1_The_Beginning_of_Privacy-First_Attribution\"><\/span><strong>SKAN 1: The Beginning of Privacy-First Attribution<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Launched in 2018, SKAN 1 was Apple\u2019s first step toward privacy-safe attribution.<\/p>\n\n\n\n<p>It provided:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>One postback per install<\/strong><\/li>\n\n\n\n<li><strong>Minimal campaign data<\/strong><\/li>\n\n\n\n<li><strong>No post-install insights<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Advertisers could see <em>which campaign drove an install<\/em>, but not what happened afterward.<\/p>\n\n\n\n<p><strong>Key takeaway:<\/strong> SKAN 1 prioritized privacy but offered almost no measurement depth.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SKAN_2_The_Start_of_Post-Install_Insights\"><\/span><strong>SKAN 2: The Start of Post-Install Insights<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>With <strong>iOS 14<\/strong> and the <strong><a href=\"https:\/\/easyinsights.ai\/blog\/what-is-app-tracking-transparency\/\">App Tracking Transparency (ATT)<\/a><\/strong> framework, Apple made SKAdNetwork critical for campaigns that couldn\u2019t use IDFA tracking.<\/p>\n\n\n\n<p><strong>SKAN 2<\/strong> improvements:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Added <strong>version tracking<\/strong> for postbacks<\/li>\n\n\n\n<li>Introduced <strong>source app ID<\/strong> and <strong>fidelity type<\/strong><\/li>\n\n\n\n<li>Enabled <strong>conversion values (0\u201363)<\/strong> for post-install activity<\/li>\n<\/ul>\n\n\n\n<p>Still, advertisers only received <strong>one postback per install<\/strong>, limiting the scope of engagement measurement.<\/p>\n\n\n\n<p><strong>Key takeaway:<\/strong> SKAN 2 was smarter, but still confined to a single postback and a single conversion value.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SKAN_3_More_Stability_and_Refinement\"><\/span><strong>SKAN 3: More Stability and Refinement<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>SKAN 3<\/strong> refined the model rather than reinventing it.<\/p>\n\n\n\n<p>It kept:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>One postback<\/strong><\/li>\n\n\n\n<li><strong>6-bit conversion value<\/strong><\/li>\n\n\n\n<li><strong>Stronger privacy thresholds<\/strong><\/li>\n<\/ul>\n\n\n\n<p>Apps could now use conversion values more reliably, but attribution windows remained short.<\/p>\n\n\n\n<p><strong>Key takeaway:<\/strong> SKAN 3 improved stability and accuracy, yet measurement was still limited and time-sensitive.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SKAN_4_A_Major_Leap_Forward\"><\/span><strong>SKAN 4: A Major Leap Forward<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Released with <strong>iOS 16.1 (2022)<\/strong>, <strong>SKAN 4<\/strong> made major improvements to measurement flexibility and campaign granularity.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Whats_New_in_SKAN_4\"><\/span><strong>What\u2019s New in SKAN 4<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Three Postbacks<\/strong> \u2192 Measure user behavior across time<br>\n<ul class=\"wp-block-list\">\n<li>Postback 1: 0-2 days<\/li>\n\n\n\n<li>Postback 2: 3-7 days<\/li>\n\n\n\n<li>Postback 3: 8-35 days<br><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Fine- and Coarse-Grained Conversion Values<\/strong> \u2192 Get either detailed (0-63) or simplified (Low\/Medium\/High) data<br><\/li>\n\n\n\n<li><strong>Expanded Source Identifiers<\/strong> \u2192 From 2-digit (0-99) to 4-digit (0-9999) campaign codes for deeper breakdowns<br><\/li>\n\n\n\n<li><strong>LockWindow Feature<\/strong> \u2192 End the measurement window early if the key event already occurred<br><\/li>\n\n\n\n<li><strong>Crowd Anonymity Tiers<\/strong> \u2192 Larger audiences unlock richer data; small ones receive coarse metrics<\/li>\n<\/ol>\n\n\n\n<p><strong>Key takeaway:<\/strong> SKAN 4 finally gives marketers flexibility &#8211; multiple postbacks, richer IDs, and scalable privacy.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Beyond_SKAN_4_Introducing_AdAttributionKit_AAK\"><\/span><strong>Beyond SKAN 4: Introducing AdAttributionKit (AAK)<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>At <strong>WWDC 2024<\/strong>, Apple announced <strong>AdAttributionKit (AAK)<\/strong> &#8211; the next generation of SKAdNetwork.<\/p>\n\n\n\n<p>AAK builds on SKAN\u2019s foundation but adds:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Re-engagement tracking<\/strong><strong><br><\/strong><\/li>\n\n\n\n<li><strong>Support for alternative app stores<\/strong><strong><br><\/strong><\/li>\n\n\n\n<li><strong>Simplified multi-platform measurement<\/strong><\/li>\n<\/ul>\n\n\n\n<p>As of 2025, <strong>SKAN 4<\/strong> remains the industry standard, but AAK points to the future of privacy-friendly attribution.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SKAN_Evolution_Summary\"><\/span><strong>SKAN Evolution Summary<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-text-color has-background has-link-color\" style=\"color:#2c01ca;background-color:#e2dff4\"><tbody><tr><td><strong>Version<\/strong><\/td><td><strong>Postbacks<\/strong><\/td><td><strong>Conversion Values<\/strong><\/td><td><strong>Key Features<\/strong><\/td><\/tr><tr><td><strong>SKAN 1<\/strong><\/td><td>1<\/td><td>Minimal<\/td><td>Basic install attribution<\/td><\/tr><tr><td><strong>SKAN 2<\/strong><\/td><td>1<\/td><td>Fine (0\u201363)<\/td><td>Source app ID, fidelity type<\/td><\/tr><tr><td><strong>SKAN 3<\/strong><\/td><td>1<\/td><td>Fine (0\u201363)<\/td><td>More stability &amp; privacy<\/td><\/tr><tr><td><strong>SKAN 4<\/strong><\/td><td>Up to 3<\/td><td>Fine (0\u201363) + Coarse (L\/M\/H)<\/td><td>Multi-window postbacks, LockWindow, expanded IDs<\/td><\/tr><tr><td><strong>AAK (Next)<\/strong><\/td><td>TBD<\/td><td>TBD<\/td><td>Re-engagement, multi-store support<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Marketers_and_Developers_Should_Do_Now\"><\/span><strong>What Marketers and Developers Should Do Now<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Upgrade to SKAN 4<\/strong> if your users are on iOS 16+<br><\/li>\n\n\n\n<li><strong>Design your conversion schema strategically<\/strong> &#8211; you only get 64 fine-grained options<br><\/li>\n\n\n\n<li><strong>Optimize for scale<\/strong> &#8211; more installs unlock finer insights<br><\/li>\n\n\n\n<li><strong>Leverage all three postbacks<\/strong> to understand short- and long-term engagement<br><\/li>\n\n\n\n<li><strong>Stay updated on AdAttributionKit<\/strong> &#8211; it\u2019s the next big shift<br><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Final_Thoughts\"><\/span><strong>Final Thoughts<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>From <strong>SKAN 1\u2019s single postback<\/strong> and minimal insight to <strong>SKAN 4\u2019s multi-window measurement<\/strong>, Apple\u2019s SKAdNetwork has matured into a powerful, privacy-compliant measurement framework.<\/p>\n\n\n\n<p>The lesson for mobile marketers is simple:<br>&#8211; <strong>Understand postbacks.<br>&#8211; Use conversion values wisely.<br>&#8211; Embrace aggregate data over user-level tracking.<\/strong><\/p>\n\n\n\n<p>In Apple\u2019s privacy-first world, success belongs to marketers who measure responsibly, and SKAdNetwork is the roadmap to get there.<br><br><strong>To learn more <a href=\"https:\/\/easyinsights.ai\/book-demo\">Book a demo<\/a> now<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the era of privacy-first marketing, Apple\u2019s SKAdNetwork (SKAN) has completely reshaped mobile attribution. Since its debut in&hellip;<\/p>\n","protected":false},"author":6,"featured_media":11209,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[384,59],"tags":[145,36,346],"class_list":["post-11207","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-apple","category-tracking","tag-marketing","tag-marketing-optimization","tag-tracking"],"aioseo_notices":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The Evolution of Apple\u2019s SKAdNetwork (SKAN): From SKAN 1 to SKAN 4 Explained<\/title>\n<meta name=\"description\" content=\"Discover how Apple\u2019s SKAdNetwork (SKAN) evolved from SKAN 1\u2019s simple install tracking to SKAN 4\u2019s multi-postback, fine- and coarse-grained conversion model. 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