Mediation platform

What is Mediation platform?

A mediation platform is a software system that connects mobile app publishers with multiple ad networks simultaneously, managing the competition for each ad impression to maximize revenue. It acts as an intermediary layer between the publisher's app and ad networks, evaluating bids and selecting the highest-paying network for every available impression. By centralizing access to multiple demand sources, a mediation platform removes the need for publishers to manage individual ad network relationships manually.

How it works

A mediation platform operates as a centralized decision engine between a publisher's app and the ad networks competing to fill its inventory.

Ad Request Initiation

When a user triggers an ad placement in a publisher's app, the app sends an ad request to the mediation platform. This request includes contextual data about the user, the placement, and the available inventory.

Demand Source Evaluation

The mediation platform evaluates the request against connected ad networks and demand sources. Traditional waterfall mediation ranks networks by historical eCPM and passes the request down the chain until it is filled. In-app bidding, a more modern approach, enables real-time simultaneous auctions where all connected networks compete at once, driving higher competition and better yields.

Ad Network Selection and Response

The winning ad network returns ad creative and targeting metadata to the mediation platform. The platform validates the response and passes the ad content back to the publisher's app for rendering.

Ad Serving

The ad is displayed to the user within the designated placement. The mediation platform records the impression and tracks downstream events such as clicks and completions.

Analytics and Reporting

Mediation platforms provide consolidated reporting across all connected ad networks, surfacing metrics such as impressions, fill rate, eCPM, and total revenue. Publishers use these dashboards to identify underperforming networks, adjust placement configurations, and optimize their overall monetization strategy.

Why it matters

Without a mediation platform, publishers must integrate and manage each ad network individually, resulting in fragmented reporting, inconsistent fill rates, and missed revenue from underutilized inventory. Mediation platforms consolidate this complexity into a single integration, enabling publishers to access multiple demand sources without multiplying their engineering and operational overhead.

The competitive auction dynamic created by mediation, particularly with in-app bidding, meaningfully increases the price paid per impression compared to relying on a single network. Publishers gain the ability to set floor prices, prioritize premium demand sources, and dynamically reallocate inventory based on real-time performance data.

For performance-focused teams, consolidated analytics across all networks enable faster, data-driven decisions about which placements and formats generate the highest return. This visibility directly supports campaign optimization and long-term monetization planning.

How to implement a mediation platform for mobile apps

Implementing a mediation platform requires selecting the right system, integrating it correctly, and continuously optimizing network configurations.

1. Choose a mediation platform. Evaluate platforms based on the ad networks they support, whether they offer in-app bidding alongside waterfall mediation, their SDK footprint, and the quality of their reporting tools. Leading options include Google AdMob Mediation, ironSource (now Unity LevelPlay), and MAX by AppLovin.

2. Integrate the mediation SDK. Add the mediation platform's SDK to your app along with the adapter SDKs for each ad network you want to connect. Follow the platform's documentation carefully to avoid initialization conflicts or duplicate ad requests.

3. Configure ad units and placements. Define your ad placements, such as banners, interstitials, and rewarded video, within the mediation dashboard. Assign each placement to the relevant ad unit in your app.

4. Connect ad networks. Add each ad network to the mediation platform and provide the required credentials, such as app IDs and placement keys. Enable in-app bidding for networks that support it to maximize auction competitiveness.

5. Set eCPM floors. Establish minimum price floors for each placement to prevent inventory from being undervalued. Adjust floors based on geo, placement type, and historical performance data.

6. Monitor fill rate and eCPM. Use the platform's analytics dashboard to track fill rate, eCPM, and revenue by network and placement. Identify networks with low fill rates or declining eCPM and replace or reorder them accordingly.

7. Connect attribution data. Pair your mediation platform with a mobile measurement partner (MMP) such as Airbridge to correlate ad revenue data with user acquisition costs and lifetime value. This connection allows you to evaluate the true return on each user acquisition channel relative to the monetization they generate.

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