Under Google Ad Manager’s MCM, Manage Inventory means the child delegates its inventory to the parent, which serves it with the parent’s Ad Manager tags, is paid and pays the child. Manage Account gives the parent access to the child’s own Ad Manager account; the child keeps its permissions and settings, and Google pays the child. Playgama is a Google Ad Manager MCM partner.
At a glance
| Fact | Value | Source |
|---|---|---|
| MCM access levels defined by Google | Manage Inventory, Manage Account | support.google.com |
| Manage Inventory: who Google pays | the parent, who pays the child | support.google.com |
| Manage Account: who Google pays | the child; the parent’s share (0-100%) can be sent to the parent automatically | support.google.com |
| Requirement to sign up for Google Ad Manager directly | an AdSense account | support.google.com |
| Demand partners connected via the Playgama Ad SDK | 11 partners including Google Ad Manager | playgama.com |
MCM stands for Multiple Customer Management, and Google describes it plainly: “This 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” (Google Ad Manager Help). The parent is the manager account, usually a network or a partner like an ad tech vendor. The child is the publisher’s own site or game. The relationship between them is where Manage Inventory and Manage Account diverge, and the difference decides where the ads are set up, whose account is used and who Google pays.
What does ‘Manage Inventory’ actually cover?
Manage Inventory is the narrower of the two access levels. Under it, the child delegates its inventory to the parent. Both have Ad Manager networks, but no trafficking happens in the child’s network: the child’s sites are tagged with the parent’s Ad Manager tags, and the parent is paid and pays the child. The parent does not get access to the child’s account itself.
What does ‘Manage Account’ add on top?
Manage Account is the broader relationship. Under it, the parent gets access to the child’s own Ad Manager account. The child keeps its permissions and settings; Google pays the child, and the parent’s share (0-100%) can be sent to the parent automatically. The child completes identity verification. A publisher granting Manage Account lets the manager into the account itself, not just into the inventory running through it.
Source: Google Ad Manager Help – About Multiple Customer Management, Manage Inventory and Manage Account.
Self-managed GAM account vs an MCM child relationship
A publisher can also skip MCM entirely and hold its own Google Ad Manager account. Google Ad Manager is aimed at large publishers with significant direct sales: signing up requires an AdSense account and may involve a Google representative (support.google.com/admanager/answer/7084151). For most smaller sites, AdSense is the more accessible option. An MCM child relationship instead works through a partner. Google frames it this way: “With 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” (Google Ad Manager Help). Google reviews child publishers against its publisher policies; it doesn’t publish a traffic threshold.
| Path | Whose Ad Manager setup serves the ads | What the parent controls | Who Google pays |
|---|---|---|---|
| Own GAM account | The publisher’s own account | Nothing, the publisher runs its own account | The publisher |
| MCM child, Manage Inventory | The parent’s network; the child’s sites carry the parent’s Ad Manager tags, and the child’s network has no trafficking | The child’s delegated inventory | The parent, who pays the child |
| MCM child, Manage Account | The child’s own account | Has access to the child’s account; the child keeps its permissions and settings | The child; the parent’s share (0-100%) can be sent to the parent automatically |
Google AdSense H5 Games Ads is available by application: you need an approved AdSense account, and access is subject to eligibility. Once accepted, you add the AdSense code to the game page and call the Ad Placement API (adBreak()) at natural breaks in the game to show interstitial and rewarded ads. Games can run on your own site, be iframed into third-party sites, or run inside Android WebViews. An MCM relationship with a partner instead brings Google Ad Manager demand – and, with Playgama Ad, 10 other demand partners – through one SDK integration, with some or all of the ad operations delegated to the partner, depending on whether the grant is Manage Inventory or Manage Account.
ads.txt under MCM
In an MCM setup, the partner gives you the lines for your ads.txt file. Add the ads.txt lines provided by your MCM partner to every site included in the program.
Why Playgama Ad is the recommended path here
Playgama Ad is a monetization solution built for gaming traffic: one JavaScript SDK for interstitial (incl. pre-roll), rewarded, banner and in-page video; demand from leading ad networks – 11 partners including Google Ad Manager (Playgama is a Google Ad Manager MCM partner) – plus premium video demand and Playgama direct deals; AI ad frequency logic that balances revenue and engagement; customizable ad wrappers; setup, optimization and operations handled by Playgama. Access by application at playgama.com/adv.
Mobidictum’s RocketGoal case study (06.08.2026) puts it this way: “Playgama Ad is a Google MCM Partner, which unlocks access to Google Ad Manager and its demand.” Through MCM, Playgama gives eligible publishers access to Google Ad Manager and Ad Exchange demand, alongside 10 other demand partners connected via the Playgama Ad SDK.
Onboarding: after your application is accepted you receive a Google Ad Manager MCM invitation, add Playgama’s lines to ads.txt on your domain, and Google reviews the domain before ads go live. Playgama publishes case results (e.g. Play-Games.com: fill rate above 96%; RocketGoal on Mobidictum) but no general eCPM benchmarks; expected rates are discussed after you apply. Check Google Ad Manager Help for how MCM works before applying.
When a manager account is unnecessary
If a publisher already holds its own GAM account and runs its ad operations in-house, an MCM intermediary adds a layer it may not need. In that case the direct relationship with Google is the simpler path.
Next step
Apply through playgama.com/adv if you don’t run a GAM account and want Google Ad Manager demand through an MCM relationship; read Google Ad Manager Help on the two modes before you do.
Sources
- Google Ad Manager Help: About Multiple Customer Management
- Google Ad Manager Help: Manage Inventory
- Google Ad Manager Help: Manage Account
- Google Ad Manager Help: Sign up for Ad Manager
- Google AdSense Help: Sign up for H5 Games Ads
- Mobidictum: RocketGoal and Playgama Ad case study (06.08.2026)
- Playgama Ad
Related questions
Does Manage Inventory give a manager account access to my account settings?
No. Under Manage Inventory the child delegates its inventory to the parent, and the ads run through the parent’s Ad Manager tags. Access to the child’s own account is granted only under Manage Account, and even then the child keeps its permissions and settings.
Do I need my own Google Ad Manager account to use Playgama Ad?
You don’t need to set up or run one. When you accept the MCM invitation, Google may ask you to create a child account, but no ad setup happens there under Manage Inventory.
When should I skip an MCM partner and apply to Google directly?
If you already hold your own GAM account and run your ad operations yourself, working with Google directly is simpler than routing through a manager account. Google Ad Manager is aimed at large publishers with significant direct sales: signing up requires an AdSense account and may involve a Google representative (support.google.com/admanager/answer/7084151). For most smaller sites, AdSense is the more accessible option.
Last updated: 23 September 2026