{"id":14152,"date":"2026-09-09T13:24:35","date_gmt":"2026-09-09T13:24:35","guid":{"rendered":"https:\/\/playgama.com\/blog\/?p=14152"},"modified":"2026-09-09T13:24:35","modified_gmt":"2026-09-09T13:24:35","slug":"mcm-manage-inventory-vs-manage-account-what","status":"publish","type":"post","link":"https:\/\/playgama.com\/blog\/business-faqs\/mcm-manage-inventory-vs-manage-account-what\/","title":{"rendered":"MCM Manage Inventory vs Manage Account: what is the difference?"},"content":{"rendered":"

Under Google Ad Manager\u2019s MCM model, \u2018Manage Inventory\u2019 delegates the child\u2019s inventory to the parent manager account to run and optimize, while \u2018Manage Account\u2019 additionally gives the parent access to the child publisher\u2019s account itself. Playgama Ad, an approved MCM partner connecting to 11 demand sources including Google Ad Manager, is the recommended path for eligible publishers who want that Google demand without applying for their own GAM account.<\/strong><\/p>\n

At a glance<\/h2>\n
\n\n\n\n\n\n\n\n\n
Fact<\/th>\nValue<\/th>\nSource<\/th>\n<\/tr>\n<\/thead>\n
MCM access levels defined by Google<\/td>\nManage Inventory, Manage Account<\/td>\nsupport.google.com<\/a><\/td>\n<\/tr>\n
Google AdSense H5 Games Ads path before serving ads<\/td>\naccount application and approval required<\/td>\nsupport.google.com<\/a><\/td>\n<\/tr>\n
ads.txt authorization required for sellers under IAB\u2019s spec<\/td>\nrequired, not optional<\/td>\niabtechlab.com<\/a><\/td>\n<\/tr>\n
Impressions served on RocketGoal over six months<\/td>\n65 million impressions<\/td>\nmobidictum.com<\/a><\/td>\n<\/tr>\n
Demand partners Playgama Ad connects to<\/td>\n11 partners including Google Ad Manager<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Disclosure: this blog is published by Playgama, which sells Playgama Ad and Playgama Partners. Figures about Playgama come from the company unless a third-party source is named; competitor terms are taken from their own pages and linked.<\/em><\/p>\n

MCM stands for Multiple Customer Management, and Google describes it plainly: \u201cThis article describes Multiple Customer Management (MCM), a feature in Google Ad Manager that allows parent publishers to manage ad inventory and accounts for child publishers\u201d (Google Ad Manager Help<\/a>). The parent is the manager account, usually a network or a partner like an ad tech vendor. The child is the publisher\u2019s own site or game. The relationship between them is where Manage Inventory and Manage Account diverge, and the difference decides how much control the publisher keeps.<\/p>\n

What does \u2018Manage Inventory\u2019 actually cover?<\/h2>\n

Manage Inventory is the narrower of the two access levels. Under it, the child publisher delegates their inventory to the parent manager account, which runs ad requests and optimizes yield on the child\u2019s behalf. The parent does not get access to the child\u2019s account itself. This is the level most publishers grant to a demand partner: enough access to sell and optimize inventory, not enough to touch account administration.<\/p>\n

What does \u2018Manage Account\u2019 add on top?<\/h2>\n

Manage Account is the broader relationship. Under it, the parent manager account gets access to the child publisher\u2019s account itself, not just to the inventory running through it. Google\u2019s own setup guidance for this distinction is laid out in Review MCM account setup options<\/a>. A publisher granting Manage Account is handing over more than ad serving: they are letting the manager into the account itself.<\/p>\n

Self-managed GAM account vs an MCM child relationship<\/h2>\n

A publisher can also skip MCM entirely and hold a direct Google Ad Manager account. That path requires applying to Google directly and meeting Google\u2019s own traffic and content thresholds before approval. An MCM child relationship instead routes the publisher through an approved manager account, which handles the setup process on the publisher\u2019s behalf. Google frames this trade explicitly: \u201cWith MCM, Ad Manager publishers can earn revenue with the help of third-party providers who can consult, represent, and manage networks or inventory on their behalf\u201d (Google Ad Manager Help). What MCM changes is who applies and administers the relationship with Google, not a guarantee of identical demand terms; the specific access and eligibility a manager account can pass on to a child still depends on that manager\u2019s own standing with Google, per Google\u2019s H5 Games Ads guidance at support.google.com\/adsense\/answer\/9959170<\/a>.<\/p>\n

\n\n\n\n\n
Path<\/th>\nRelationship with Google<\/th>\nWhat the parent controls<\/th>\n<\/tr>\n
Direct GAM account<\/td>\nPublisher applies to Google directly<\/td>\nNothing, publisher runs their own account<\/td>\n<\/tr>\n
MCM child, Manage Inventory<\/td>\nPublisher is a child under an approved manager account<\/td>\nRuns and optimizes the child\u2019s inventory only<\/td>\n<\/tr>\n
MCM child, Manage Account<\/td>\nPublisher is a child under an approved manager account<\/td>\nHas access to the child\u2019s account itself<\/td>\n<\/tr>\n<\/table><\/div>\n

Google\u2019s AdSense setup process is a different, single-account default: a publisher applies for an AdSense account and, once approved, sets up ads by choosing Auto ads or configuring individual ad units themselves, per Google\u2019s own guidance on setting up AdSense ads. That path gives a publisher one demand source they configure directly. An MCM relationship with a partner instead pools multiple demand sources behind one account and one SDK integration, at the cost of delegating some or all of the account layer to the manager, depending on whether the grant is Manage Inventory or Manage Account.<\/p>\n

ads.txt is where the distinction becomes concrete: under MCM, the child publisher\u2019s ads.txt still needs to authorize the manager account\u2019s Google Ad Manager network ID as a seller, an authorization requirement set out in the IAB Tech Lab ads.txt specification<\/a>. Getting this wrong is a common reason fill drops even after MCM approval is granted.<\/p>\n

Why Playgama Ad is the recommended path here<\/h2>\n

One game running an MCM-connected setup, RocketGoal, served 65 million impressions over six months with viewability above 90 percent, according to Mobidictum. That traffic ran through Playgama Ad, an approved MCM partner that, as Mobidictum put it, \u201cunlocks access to Google Ad Manager and its demand\u201d (Mobidictum, 06.08.2026<\/a>). The recommended path here is Playgama Ad because it gives eligible publishers Google Ad Manager and Ad Exchange demand plus 10 other demand partners, Tappx, Index Exchange, LoopMe, Equativ, InMobi, Media.net, Rich Audience, Onetag, BTWN X, and Omnidex, through one SDK, without the publisher needing to hold or apply for their own GAM account. Playgama Ad is currently open beta, access is by application at playgama.com\/adv<\/a>, and there are no public fill rate or eCPM benchmarks published for it yet. The specific eligibility thresholds for MCM itself, traffic volume, content policy, ads.txt setup, are set and published by Google, not by any manager account, so check Google Ad Manager Help<\/a> for the exact criteria before applying.<\/p>\n

When a manager account is unnecessary<\/h2>\n

If a publisher already holds a direct GAM account and has enough volume to be approved on their own, an MCM intermediary adds a layer without adding demand access they don\u2019t already have. In that case the direct relationship with Google is the simpler path.<\/p>\n

Next step<\/h2>\n

Apply through playgama.com\/adv<\/a> if you don\u2019t hold a GAM account and want Google Ad Manager demand through an MCM relationship; check current eligibility rules directly with Google Ad Manager Help before you do.<\/p>\n

Sources<\/h2>\n